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Home > Fasteners > Nuts > Lock Nuts > SS Serrated Flange Locking Nut > 1/4-20 18-8 STAINLESS STEEL SERRATED FLANGE LOCK NUT

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Item #: NFLS0250000

1/4-20 18-8 STAINLESS STEEL SERRATED FLANGE LOCK NUT

$0.12775/EA

Quantity	Price
Quantity	Price
1	$0.12775/ EA
1100	$0.11964/ EA
4390	$0.10668/ EA
19740	$0.07027/ EA

Qty

In Stock

Product Specification
Governing Standards
Dimensional Specifications

Dimensional Specifications

Dimensional SpecificationsCase Hardened

Serrated flange lock nut dimensions

Per ASME B18.16.4-2008
Nominal Diameter		UNC	UNF	F		G		B		H		J	K
				Width Across Flats		Width Across Corners		Flange Diameter		Nut Thickness		Hex Height	Flange Thickness
				Max	Min	Max	Min	Max	Min	Max	Min	Hex Height	Flange Thickness
#6	0.1380	32	40	0.3120	0.3020	0.3610	0.3420	0.4220	0.4060	0.1710	0.1560	0.1000	0.0200
#8	0.1640	32	36	0.3440	0.3340	0.3970	0.3810	0.4690	0.4520	0.2030	0.1870	0.1300	0.0200
#10	0.1900	24	32	0.3750	0.3650	0.4330	0.4160	0.5000	0.4800	0.2190	0.2030	0.1300	0.0300
#12	0.2160	24	28	0.4380	0.4280	0.5050	0.4880	0.5940	0.5740	0.2360	0.2220	0.1400	0.0400
1/4	0.2500	20	28	0.4380	0.4280	0.5050	0.4880	0.5940	0.5740	0.2360	0.2222	0.1400	0.0400
5/16	0.3125	18	24	0.5000	0.4890	0.5770	0.5570	0.6800	0.6600	0.2830	0.2680	0.1700	0.0400
3/8	0.3750	16	24	0.5620	0.5510	0.6500	0.6280	0.7500	0.7280	0.3470	0.3300	0.2300	0.0400
7/16	0.4375	14	20	0.6880	0.6750	0.7940	0.7680	0.9370	0.9100	0.3950	0.3750	0.2600	0.0400
1/2	0.5000	13	20	0.7500	0.7360	0.8660	0.8400	1.0310	1.0000	0.4580	0.4370	0.3100	0.0500
9/16	0.5625	12	18	0.8750	0.8610	1.0100	0.9820	1.1880	1.1550	0.5060	0.4830	0.3500	0.0500
5/8	0.6250	11	18	0.9380	0.9220	1.0830	1.0510	1.2810	1.2480	0.5690	0.5450	0.4000	0.0500
3/4	0.7500	10	16	1.1250	1.0880	1.2990	1.2400	1.5000	1.4600	0.6750	0.6270	0.4600	0.0600
7/8	0.8750	9	14	1.1790	1.1660	1.3610	1.2950	1.6820	*	0.7860	0.7420	*	0.1100

All dimensions are in inches.