Stainless steel and other types of rivet nuts for sheet metal threaded inserts

Hex body stainless steel rivet nuts for anti-rotation installation

Stainless steel Flat head rivet nuts for thin sheet metal applications

Stainless Steel Rivet Nuts & Rivnuts

Our premium stainless steel rivet nuts (technically known as blind threaded inserts, and widely referred to as rivnuts or nutserts) provide robust, load-bearing threads in thin sheet metal, tubing, or extrusions where tapped threads are impossible. Designed for blind hole installation, these threaded inserts require access from only one side. We specialize exclusively in corrosion-resistant materials, including 304/316 stainless steel, A2/A4 Inox, and Titanium Gr2. Available in comprehensive metric (M3-M16) and imperial (UNC/UNF) sizes, our catalog features flat head, low profile, and countersunk designs. Choose from knurled body rivet nuts for high torque-out resistance, or hex / half-hex rivnuts to completely eliminate spinning in heavy-duty structural assemblies.

Product Specifications

Size (Internal Thread):
Metric: M3, M4, M5, M6, M8, M10, M12 (M14 & M16 available for heavy-duty applications).
Imperial (UNC/UNF): #4-40, #6-32, #8-32, #10-24, #10-32, 1/4″-20, 5/16″-18, 3/8″-16, 1/2″-13.
Materials：
Stainless Steel: 304 (A2), 316 (A4), 316L (High corrosion resistance).
Specialty Alloys: Titanium Gr2, Duplex 2205, Inconel (Available upon custom request for extreme marine/chemical environments).
Head Styles & Body Types:
Head: Flat Head (Large Flange), Reduced Head (Low Profile), Countersunk (CSK).
Body: Round Smooth, Round Knurled (Ribbed), Half-Hex, Full-Hex, Slotted (Plus Nut / Cross Nut).
End Type: Open End, Closed End (Watertight / Sealed).
Grip Range (Panel Thickness):
Standard Grip (e.g., 0.5mm – 3.0mm) and Wide/Extended Grip for extremely thick materials. (Custom grip ranges precision-machined to your exact sheet metal specifications).
Surface Finish / Treatment:
Plain, Passivated (Standard for Stainless Steel to prevent oxidation), PTFE / Xylan Coated (To prevent thread galling during installation).

Applications

Rivet nuts are widely used to create strong internal threads in thin sheet metal, tubes, profiles, panels, and enclosed structures where tapping, welding, or backside access is not practical. They are commonly used in machinery assembly, electrical enclosures, control cabinets, vehicle components, HVAC equipment, metal furniture, automation systems, and general industrial fabrication.

For outdoor, humid, marine, or corrosion-prone environments, 304 and 316 stainless steel rivet nuts are recommended. Knurled body and hex body rivet nuts help improve torque resistance and reduce spinning during installation, while closed end rivet nuts are suitable for sealed assemblies where dust, moisture, or liquid ingress needs to be reduced.

For plastics, fiberglass, softer panels, or thicker materials, slotted rivet nuts and wide-grip designs can provide better load distribution on the blind side of the assembly. Custom materials, grip ranges, and body styles can be supplied according to project requirements.

Manufacturing & Customization

ViaWay Global supports both standard and custom rivet nuts for global B2B buyers. Customers can send drawings, samples, standard numbers, installation hole sizes, panel thickness, material requirements, surface finish requirements, or size lists for quotation.

Custom options include non-standard thread sizes, special grip ranges, reduced head designs, closed end structures, knurled bodies, half hex or full hex bodies, passivation, zinc plating, and special alloy materials. For stainless steel and special alloy rivet nuts, we can support material confirmation, dimensional inspection, thread checking, and documentation according to order requirements.

Whether you need standard M3–M12 stainless steel rivnuts, closed end rivet nuts for sealed assemblies, or custom threaded inserts for industrial projects, we can help you select suitable specifications and provide stable supply for bulk orders.

Insert Rivet Nut Dimensions

Flat Head RivNut Dimensions-Global Standard Metric Series (GB/T Standard)

The most widely adopted dimensional standard in Asian manufacturing supply chains, conforming strictly to GB/T 17880.1. Highly cost-effective for general industrial applications.

Thread Size D	P	d			d1		dk	k	r	d0		h1
Thread Size D	Coarse thread	Nominal Size	max	min	min=nominal size (H12)	max	max	k	r	min=nominal size	max	Ref.
M3	0.5	5	4.97	4.9	4	4.12	8	0.8	0.2	5	5.15	5.8
M4	0.7	6	5.97	5.9	4.8	4.92	9	0.8	0.2	6	6.15	7.5
M5	0.8	7	6.97	6.9	5.6	5.72	10	1	0.2	7	7.15	9.3
M6	1	9	8.97	8.9	7.5	7.65	12	1.5	0.2	9	9.15	11
M8	1.25	11	10.97	10.9	9.2	9.35	14	1.5	0.3	11	11.15	12.3
M10	1.5	13	12.97	12.9	11	11.18	16	1.8	0.3	13	13.15	15
M10	1	13	12.97	12.9	11	11.18	16	1.8	0.3	13	13.15	15
M12	1.75	15	14.97	14.9	13	13.18	18	1.8	0.3	15	15.15	17.5
M12	1.5	15	14.97	14.9	13	13.18	18	1.8	0.3	15	15.15	17.5

Flat Head RivNut Dimensions-European Metric Series (EU Industry Standard)

Designed to match European industrial dimensional preferences. Fully compatible with Böllhoff RIVKLE® standard metric profiles.

d	L	B	e	Ø	S	L2	E max
(mm)	(mm)	(mm)	(mm) (min - max)	+0.1/0 (mm)	(mm)	(mm)	(mm)
M3	8.8	7.0	0.50 - 1.00	5.0	S=2.0-e	5.8	1.0
M3	9.6	7.0	1.00 - 1.75	5.0	S=2.8-e	6.0	1.0
M3	10.4	7.0	1.75 - 2.50	5.0	S=3.4-e	6.0	1.0
M3	11.2	7.0	2.50 - 3.25	5.0	S=4.1-e	6.1	1.0
M4	11.0	9.0	0.50 - 3.00	6.0	S=4.3-e	5.8	1.0
M4	11.6	8.0	2.50 - 3.25	6.0	S=4.6-e	6.0	1.0
M5	12.75	10.0	0.50 - 3.00	7.0	S=4.7-e	7.3	1.0
M5	14.7	10.0	3.00 - 4.00	7.0	S=6.0-e	8.0	1.0
M6	14.3	13.0	0.50 - 3.00	9.0	S=5.0-e	8.0	1.5
M6	16.9	13.0	3.00 - 5.50	9.0	S=7.5-e	8.2	1.5
M8	17.7	16.0	0.50 - 3.00	11.0	S=5.5-e	11.0	1.5
M8	20.4	16.0	3.00 - 5.50	11.0	S=8.1-e	11.0	1.5
M10	21.8	19.0	0.70 - 3.50	13.0	S=6.1-e	13.9	2.0
M10	24.0	16.0	3.00 - 4.50	13.0	S=7.4-e	14.6	2.0
M10	25.6	16.0	4.50 - 6.00	13.0	S=8.9-e	14.5	2.0

Flat Head RivNut Dimensions-North American Series (AVK Standard)

Engineered for the NA market. Dimensionally interchangeable with AVK A-L Series, and A-K Series

* Dimensions in millimeters

A-L Series （large diameter-low profile head ）UNIFIED(INCH) SIZES

Thread Size	Thread Call Out	Grip Range	Grip Call Out	Hole Size (+.006/-.000)	HD (±.010 / ±0.25*)	HH (±.003)	L (±.015)	D Max.	IL Max.	LB (±.015)	ILB Max.	*IATD Max.**
6-32 UNC	632	.020-.080	80	17/64 (.2656)	0.39	0.03	0.42	0.265	0.305	0.74	0.64	0.61
6-32 UNC	632	.080-.130	130	17/64 (.2656)	0.39	0.03	0.47	0.265	0.305	0.74	0.58	0.67
8-32 UNC	832	.020-.080	80	17/64 (.2656)	0.39	0.03	0.42	0.265	0.305	0.74	0.64	0.61
8-32 UNC	832	.080-.130	130	17/64 (.2656)	0.39	0.03	0.47	0.265	0.305	0.74	0.58	0.67
10-24 UNC	1024	.020-.130	130	19/64 (.2969)	0.415	0.03	0.475	0.296	0.315	0.99	0.845	0.73
10-24 UNC	1024	.130-.225	225	19/64 (.2969)	0.415	0.03	0.585	0.296	0.315	0.99	0.735	0.84
10-32 UNF	1032	.020-.130	130	19/64 (.2969)	0.415	0.03	0.475	0.296	0.315	0.99	0.845	0.73
10-32 UNF	1032	.130-.225	225	19/64 (.2969)	0.415	0.03	0.585	0.296	0.315	0.99	0.735	0.84
1/4-20 UNC	420	.027-.165	165	25/64 (.3906)	0.5	0.03	0.58	0.39	0.38	1.19	1.005	0.895
1/4-20 UNC	420	.165-.260	260	25/64 (.3906)	0.5	0.03	0.68	0.39	0.38	1.19	0.905	1.035
5/16-18 UNC	518	.027-.150	150	17/32 (.5312)	.685*	0.035	0.69	0.53	0.47	1.39	1.175	0.995
5/16-18 UNC	518	.150-.312	312	17/32 (.5312)	.685*	0.035	0.805	0.53	0.425	1.39	1.025	1.12
3/8-16 UNC	616	.027-.150	150	17/32 (.5312)	.685*	0.035	0.69	0.53	0.47	1.39	1.175	0.995
3/8-16 UNC	616	.150-.312	312	17/32 (.5312)	.685*	0.035	0.805	0.53	0.425	1.39	1.025	1.12
1/2-13 UNC	813	.063-.200	200	11/16 (.6875)	.865*	0.047	1.15	0.685	0.85	2.365	2.07	1.505
1/2-13 UNC	813	.200-.350	350	11/16 (.6875)	.865*	0.047	1.3	0.685	0.85	2.365	1.92	1.505
1/2-13 UNC	813	.350-.500	500	11/16 (.6875)	.865*	0.047	1.45	0.685	0.86	2.365	1.77	1.505

A-L Series （large diameter-low profile head ） Metric Sizes

Thread Size	Thread Call Out	Grip Range	Grip Call Out	Hole Size (+0.15/-0)	HD (±0.25 / ±0.64*)	HH (±0.08)	L (±0.38)	D Max.	IL Max.	LB (±0.38)	ILB Max.	*IATD Max.**
M4 x 0.7 ISO	470	0.50-2.00	2	6.75	9.91	0.76	10.67	6.73	7.75	18.8	16.26	15.49
M4 x 0.7 ISO	470	2.00-3.30	3.3	6.75	9.91	0.76	11.94	6.73	7.75	18.8	14.73	17.02
M5 x 0.8 ISO	580	0.50-3.30	3.3	7.6	10.54	0.76	12.07	7.52	8	25.15	21.46	18.54
M5 x 0.8 ISO	580	3.30-5.70	5.7	7.6	10.54	0.76	14.86	7.52	8	25.15	18.67	21.34
M6 x 1.0 ISO	610	0.70-4.20	4.2	10	12.7	0.76	14.73	9.91	9.65	30.23	25.53	22.73
M6 x 1.0 ISO	610	4.20-6.60	6.6	10	12.7	0.76	17.27	9.91	9.65	30.23	22.99	26.29
M8 x 1.25 ISO	8125	0.70-3.80	3.8	13.5	17.40*	0.89	17.53	13.46	11.94	35.31	29.85	25.27
M8 x 1.25 ISO	8125	3.80-7.90	7.9	13.5	17.40*	0.89	20.45	13.46	10.8	35.31	26.04	28.45
M10 x 1.5 ISO	1015	0.70-3.80	3.8	13.5	17.40*	0.89	17.53	13.46	11.94	35.31	29.85	25.27
M10 x 1.5 ISO	1015	3.80-7.90	7.9	13.5	17.40*	0.89	20.45	13.46	10.8	35.31	26.04	28.45
M12 x 1.75 ISO	12175	1.60-5.10	5.1	17.45	21.97*	1.19	29.21	17.4	21.59	60.07	52.58	38.23
M12 x 1.75 ISO	12175	5.10-8.90	8.9	17.45	21.97*	1.19	33.02	17.4	21.59	60.07	48.77	38.23
M12 x 1.75 ISO	12175	8.90-12.7	12.7	17.45	21.97*	1.19	36.83	17.4	21.84	60.07	44.96	38.23

A-K Series（reduced profile head ）UNIFIED(INCH) SIZES

Thread	Thread	Grip	Grip	Hole Size	HD	HH	L	D	IL	LB	ILB	IATD*
Size	Call Out	Range	Call Out	+0.006 -0.000	±.010 ±0.25*	±.003	±.015	Max.	Max.	±.015	Max	Max.
6-32 UNC	632	.020-.080	80	17/64 (.2656)	0.31	0.019	0.42	0.265	0.305	0.74	0.64	0.61
6-32 UNC	632	.080-.130	130	17/64 (.2656)	0.31	0.019	0.47	0.265	0.305	0.74	0.58	0.67
8-32 UNC	832	.020-.080	80	17/64 (.2656)	0.31	0.019	0.42	0.265	0.305	0.74	0.64	0.61
8-32 UNC	832	.080-.130	130	17/64 (.2656)	0.31	0.019	0.47	0.265	0.305	0.74	0.58	0.67
10-24 UNC	1024	.020-.130	130	19/64 (.2969)	0.34	0.019	0.475	0.296	0.315	0.99	0.845	0.73
10-24 UNC	1024	.130-.225	225	19/64 (.2969)	0.34	0.019	0.585	0.296	0.315	0.99	0.735	0.84
10-32 UNF	1032	.020-.130	130	19/64 (.2969)	0.34	0.019	0.475	0.296	0.315	0.99	0.845	0.73
10-32 UNF	1032	.130-.225	225	19/64 (.2969)	0.34	0.019	0.585	0.296	0.315	0.99	0.735	0.84
1/4-20 UNC	420	.027-.165	165	25/64 (.3906)	0.455	0.022	0.58	0.39	0.38	1.19	1.005	0.895
1/4-20 UNC	420	.165-.260	260	25/64 (.3906)	0.455	0.022	0.68	0.39	0.38	1.19	0.905	1.035
5/16-18 UNC	518	.027-.150	150	17/32 (.5312)	0.595	0.022	0.69	0.53	0.47	1.39	1.175	0.995
5/16-18 UNC	518	.150-.312	312	17/32 (.5312)	0.595	0.022	0.805	0.53	0.425	1.39	1.025	1.12
3/8-16 UNC	616	.027-.150	150	17/32 (.5312)	0.595	0.022	0.69	0.53	0.47	1.39	1.175	0.995
3/8-16 UNC	616	.150-.312	312	17/32 (.5312)	0.595	0.022	0.805	0.53	0.425	1.39	1.025	1.12

Flat Head RivNut Dimensions-North American Series (Sherex Standard)

Engineered for the NA market. Dimensionally interchangeable with Sherex CAL Series, and CAK Series

CAL Series （Large Flange Knurled Body Thin Wall）Stainless Steel (Inches)

Item #	Thread Size	Grip Range	L ±.015	D (Max.)	LB ±.015	Hole Size
Item #	Thread Size	(Min.-Max.)	(inch)	(inches)	(inch)	+.006/-.000 (inches)
CAL1-0632-080	#6-32 UNC	.020 - .080	0.42	0.265	0.74	0.266
CAL1-0832-080	#8-32 UNC	.002-.080	0.42	0.265	0.74	0.266
CAL1-1024-130	#10-24 UNC	.020-.130	0.475	0.296	0.99	0.297
CAL1-1032-130	#10-32 UNF	.020-.130	0.475	0.296	0.99	0.297
CAL1-2520-165	1/4-20 UNC	.027-.165	0.58	0.39	1.19	0.391
CAL1-2528-165	1/4-28 UNF	.027-.165	0.58	0.39	1.19	0.391
CAL1-3118-150	5/16-18 UNC	.027-.150	0.69	0.53	1.39	0.531
CAL1-3124-150	5/16-24 UNF	.027-.150	0.69	0.53	1.39	0.531
CAL1-3716-150	3/8-16 UNC	.027-.150	0.69	0.53	1.39	0.531
CAL1-3724-150	3/8-24 UNF	.027-.150	0.69	0.53	1.39	0.531

CAL Series （Large Flange Knurled Body Thin Wall）Stainless Steel (Metrics)

Item #	Thread Size	Grip Range	L ±.38	LB ±.38	Hole Size
Item #	Thread Size	(Min.-Max.)	(mm)	(mm)	+.15/-.000 (mm)
CAL1-470-2.0	M4x0.7 ISO	0.50-2.00	10.67	18.8	6.75
CAL1-580-3.3	M5x0.8 ISO	0.50-3.30	12.07	25.15	7.6
CAL1-610-4.2	M6x1.0 ISO	0.70-4.20	14.73	30.23	10
CAL1-8125-3.8	M8x1.25 ISO	0.70-3.80	17.53	35.31	13.5
CAL1-1015-3.8	M10x1.5 ISO	0.70-3.80	17.53	35.31	13.5
CAL1-12175-5.1	M12x1.75 ISO	1.60-5.10	29.21	60.07	17.45

CAK Series （Small Flange Knurled Body Thin Wall）Stainless Steel (Inches)

Item #	Thread Size	Grip Range	L ±.38	LB ±.38	Hole Size
Item #	Thread Size	(Min.-Max.)	(mm)	(mm)	+.15/-.000 (mm)
CAK1-470-2.0	M4x0.7 ISO	0.50-2.00	10.67	18.8	6.75
CAK1-470-3.3	M4x0.7 ISO	2.00-3.30	11.94	18.8	6.75
CAK1-580-3.3	M5x0.8 ISO	0.50-3.30	12.07	25.15	7.6
CAK1-580-5.7	M5x0.8 ISO	3.30-5.70	14.86	25.15	7.6
CAK1-610-4.2	M6x1.0 ISO	0.70-4.20	14.73	30.23	10
CAK1-610-6.6	M6x1.0 ISO	4.20-6.60	17.27	30.23	10
CAK1-8125-3.8	M8x1.25 ISO	0.70-3.80	17.53	35.31	13.5
CAK1-8125-7.9	M8x1.25 ISO	3.80-7.90	20.45	35.31	13.5
CAK1-1015-3.8	M10x1.5 ISO	0.70-3.80	17.53	35.31	13.5
CAK1-1015-7.9	M10x1.5 ISO	3.80-7.90	20.45	35.31	13.5

Need a Quote? Send What You Have

Not sure which rivet nut type, material or grip range you need? No problem. Send us your drawing, size list, sample photo, hole size, sheet thickness or application details. Our team will help confirm the suitable thread size, body style, material, finish and production option.

Standard or Drawing

GB/T 17880 series, European metric profiles, North American style rivet nuts, or custom drawings.

Size or Sample Photo

Thread size, grip range, hole diameter, head style, body type, or a clear sample photo if you are not sure.

Material Preference

304, 316, 316L, 18-8 stainless steel, titanium, duplex stainless steel, Inconel or other special materials.

Quantity & Application

Estimated quantity, packaging needs, installation method and where the rivet nuts will be used.

Stainless Steel Rivet Nuts & Rivnuts

Product Specifications

Applications

Manufacturing & Customization

Insert Rivet Nut Dimensions

Flat Head RivNut Dimensions-Global Standard Metric Series (GB/T Standard)

Flat Head RivNut Dimensions-European Metric Series (EU Industry Standard)

Flat Head RivNut Dimensions-North American Series (AVK Standard)

A-L Series （large diameter-low profile head ）UNIFIED(INCH) SIZES

A-L Series （large diameter-low profile head ） Metric Sizes

A-K Series（reduced profile head ）UNIFIED(INCH) SIZES

Flat Head RivNut Dimensions-North American Series (Sherex Standard)

CAL Series （Large Flange Knurled Body Thin Wall）Stainless Steel (Inches)

CAL Series （Large Flange Knurled Body Thin Wall）Stainless Steel (Metrics)

CAK Series （Small Flange Knurled Body Thin Wall）Stainless Steel (Inches)

Need a Quote? Send What You Have

Standard or Drawing

Size or Sample Photo

Material Preference

Quantity & Application

Main Products

Contact

Stainless Steel Rivet Nuts & Rivnuts

Product Specifications

Applications

Manufacturing & Customization

Insert Rivet Nut Dimensions

Flat Head RivNut Dimensions-Global Standard Metric Series (GB/T Standard)

Flat Head RivNut Dimensions-European Metric Series (EU Industry Standard)

Flat Head RivNut Dimensions-North American Series (AVK Standard)

A-L Series （large diameter-low profile head ）UNIFIED(INCH) SIZES

A-L Series （large diameter-low profile head ） Metric Sizes

A-K Series（reduced profile head ）UNIFIED(INCH) SIZES

Flat Head RivNut Dimensions-North American Series (Sherex Standard)

CAL Series （Large Flange Knurled Body Thin Wall）Stainless Steel (Inches)

CAL Series （Large Flange Knurled Body Thin Wall）Stainless Steel (Metrics)​

CAK Series （Small Flange Knurled Body Thin Wall）Stainless Steel (Inches)

Need a Quote? Send What You Have

Standard or Drawing

Size or Sample Photo

Material Preference

Quantity & Application

Main Products

Contact

CAL Series （Large Flange Knurled Body Thin Wall）Stainless Steel (Metrics)