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SS Nylon Insert Jam Lock Nut

18-8 stainless steel nylon insert jam lock nuts are thin patterned hex nuts that have a nylon collar insert in one end of the nut. The nylon insert increases friction on the screw thread, which resists loosening. Dimensional specifications are governed by ASME B18.16.6. The nylon insert jam lock nut is an economic locking nut and ideal in applications where vibration or motion could loosen or undo the nut.

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Governing Standards
Dimensional Specifications

Dimensional Specifications

Dimensional Specifications18-8 Stainless Steel

Per ASME B18.16.6-2017
Nominal Diameter		UNC	UNF	A			B	C		D
				Width Across Flats			Width Across Corners	Thickness		Hex Height
				Basic	Max	Min	Min	Max	Min	Min
#2	0.0860	56		1/4	0.2510	0.2430	0.2680	0.1240	0.0940	0.0750
#4	0.1120	40		1/4	0.2510	0.2430	0.2680	0.1240	0.0940	0.0750
#6	0.1380	32	40	5/16	0.3130	0.3050	0.3390	0.1400	0.1100	0.0900
#8	0.1640	32	36	11/32	0.3450	0.3360	0.3740	0.1870	0.1570	0.1100
#10	0.1900	24	32	3/8	0.3760	0.3670	0.4100	0.1870	0.1570	0.1100
#12	0.2160	24	28	3/8	0.4390	0.4300	0.4820	0.2180	0.1880	0.1250
1/4	0.2500	20	28	7/16	0.4390	0.4300	0.4820	0.2180	0.1880	0.1250
5/16	0.3125	18	24	1/2	0.5020	0.4920	0.5520	0.2650	0.2350	0.1580
3/8	0.3750	16	24	9/16	0.5640	0.5530	0.6220	0.2810	0.2510	0.1500
7/16	0.4375	14	20	5/8	0.6270	0.6150	0.6940	0.3280	0.2980	0.2250
1/2	0.5000	13	20	3/4	0.7520	0.7410	0.8370	0.3280	0.2980	0.1900
9/16	0.5625	12	18	7/8	0.8770	0.8650	0.9780	0.3740	0.3440	0.2250
5/8	0.6250	11	18	15/16	0.9400	0.9280	1.0510	0.4060	0.3760	0.2650
3/4	0.7500	10	16	1 1/8	1.0640	1.0520	1.1910	0.4210	0.3910	0.2880
7/8	0.8750	9	14	1 1/4	1.2520	1.2390	1.4030	0.4840	0.4540	0.3400
1	1.0000	8	14	1 1/2	1.4400	1.4270	1.6150	0.5780	0.5160	0.4050

All dimensions are in inches.

SS Nylon Insert Jam Lock Nut

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Diameter Thread Pitch Width Across Flats Height of Nut Item # Availability Price Quantity UOM

3/8

9/16

0.2510

NNIS037NCJM

In Stock

$0.2515/EA

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3/8-16 18-8 STAINLESS STEEL NYLON INSERT JAM LOCK NUT

$0.2515/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.2515/EA
1100	$0.23599/EA
4380	$0.20939/EA
19680	$0.1406/EA

3/8

9/16

0.2510

NNIS037NFJM

In Stock

$0.41591/EA

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3/8-24 18-8 STAINLESS STEEL NYLON INSERT JAM LOCK NUT

$0.41591/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.41591/EA
1100	$0.39026/EA
4380	$0.34628/EA
19680	$0.23251/EA

1/2

3/4

0.2980

NNIS050NCJM

In Stock

$0.93441/EA

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1/2-20 18-8 STAINLESS STEEL NYLON INSERT JAM LOCK NUT

$0.93441/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.93441/EA
440	$0.87923/EA
1740	$0.7769/EA
7830	$0.53525/EA

1/2

3/4

0.2980

NNIS050NFJM

In Stock

$0.59944/EA

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1/2-20 18-8 STAINLESS STEEL NYLON INSERT JAM LOCK NUT

$0.59944/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.59944/EA
440	$0.56403/EA
1740	$0.49839/EA
7830	$0.34336/EA

SS Nylon Insert Jam Lock Nut

Technical Data

Governing Standards

Governing Standards18-8 Stainless Steel

Dimensional Specifications

Dimensional Specifications18-8 Stainless Steel

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3/8-16 18-8 STAINLESS STEEL NYLON INSERT JAM LOCK NUT

3/8-24 18-8 STAINLESS STEEL NYLON INSERT JAM LOCK NUT

1/2-20 18-8 STAINLESS STEEL NYLON INSERT JAM LOCK NUT

1/2-20 18-8 STAINLESS STEEL NYLON INSERT JAM LOCK NUT