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Grade 2 Hex Nut

SAE J995 Grade 2 hex nuts are an economical, common low strength nut manufactured from low carbon steel. Grade 2 hex nuts are available in diameters from 1/4" through 1 1/2" inclusive. Dimensional specifications are governed by ASME B18.2.2. Grade 2 requires no material marking.These nuts are equivalent in strength to ASTM A563 Grade A nuts. Grade 2 nuts are commonly used in bolting applications with Grade 2 bolts, Grade 5 bolts, and A307 bolts. Available in zinc plated finish. Zinc plating sacrifices itself, corroding before the base material, offering added corrosion resistance.

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Governing Standards
Mechanical Properties
Chemical Properties
Dimensional Specifications

Dimensional Specifications

Dimensional SpecificationsGrade 2

Per ASME B18.2.2-2015
Nominal Diameter		UNC	UNF	F			G		H
				Width Across Flats			Width Across Corners		Thickness
				Basic	Max	Min	Max	Min	Basic	Max	Min
1/4	0.2500	20	28	7/16	0.4380	0.4280	0.5050	0.4880	7/32	0.2260	0.2120
5/16	0.3125	18	24	1/2	0.5000	0.4890	0.5770	0.5570	17/64	0.2730	0.2580
3/8	0.3750	16	24	9/16	0.5630	0.5510	0.6500	0.6280	21/64	0.3370	0.3200
7/16	0.4375	14	20	11/16	0.6880	0.6750	0.7940	0.7680	3/8	0.3850	0.3650
1/2	0.5000	13	20	3/4	0.7500	0.7300	0.8660	0.8400	7/16	0.4480	0.4270
9/16	0.5625	12	18	7/8	0.8750	0.8610	1.0100	0.9820	31/64	0.4960	0.4730
5/8	0.6250	11	18	15/16	0.9380	0.9220	1.0830	1.0510	35/64	0.5590	0.5350
3/4	0.7500	10	16	1 1/8	1.1250	1.0880	1.2990	1.2400	41/64	0.6650	0.6170
7/8	0.8750	9	14	1 5/16	1.3120	1.2690	1.5160	1.4470	3/4	0.7760	0.7240
1	1.0000	8	14	1 1/2	1.5000	1.4500	1.7320	1.6530	55/64	0.8870	0.8310
1 1/8	1.1250	7	12	1 11/16	1.6880	1.6310	1.9490	1.8590	31/32	0.9990	0.9390
1 1/4	1.2500	7	12	1 7/8	1.8750	1.8120	2.1650	2.0660	1 1/16	1.0940	1.0300
1 3/8	1.3750	6	12	2 1/16	2.0620	1.9940	2.3820	2.2730	1 11/16	1.2060	1.3800
1 1/2	1.5000	6	12	2 1/4	2.2500	2.1750	2.5980	2.4800	1 9/32	1.3170	1.2450

All dimensions are in inches.

Grade 2 Hex Nut

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

1/4

7/16

0.2187

NF2B025NF00

3-5 Working Days

$0.04186/EA

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1/4-28 J995 GRADE 2 HEX NUT

$0.04186/EA

Qty

3-5 Working Days

Product Detail

Quantity	Price
Quantity	Price
1	$0.04186/ EA
1370	$0.0392/ EA
5450	$0.03495/ EA
24490	$0.02303/ EA

5/16

1/2

0.2656

NF2B031NF00

In Stock

$0.05182/EA

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5/16-24 J995 GRADE 2 HEX NUT

$0.05182/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.05182/ EA
910	$0.04855/ EA
3640	$0.04323/ EA
16370	$0.02865/ EA

3/8

9/16

0.3281

NF2B037NF00

3-5 Working Days

$0.03989/EA

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3/8-24 J995 GRADE 2 HEX NUT

$0.03989/EA

Qty

3-5 Working Days

Product Detail

Quantity	Price
Quantity	Price
1	$0.03989/ EA
630	$0.03745/ EA
2500	$0.03349/ EA
11250	$0.02217/ EA

1/2

3/4

0.4375

NF2B050NF00

In Stock

$0.26993/EA

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1/2-20 J995 GRADE 2 HEX NUT

$0.26993/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.26993/ EA
270	$0.25339/ EA
1070	$0.22464/ EA
4800	$0.15136/ EA

9/16

7/8

NF2B056NF00

3-5 Working Days

$0.23041/EA

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9/16-18 J995 GRADE 2 HEX NUT

$0.23041/EA

Qty

3-5 Working Days

Product Detail

Quantity	Price
Quantity	Price
1	$0.23041/ EA
180	$0.21629/ EA
690	$0.19175/ EA
3090	$0.1292/ EA

NF2B200NF00

In Stock

$10.88281/EA

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2-12 J995 GRADE 2 HEX NUT

$10.88281/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$10.88281/ EA
30	$10.26668/ EA
50	$9.05228/ EA
100	$6.36891/ EA

SAE J995	Covers the mechanical and material requirements for inch series fasteners used in automotive and related industries in diameters through 1-1/2″.
ASME B18.2.2	Covers the complete general and dimensional data for the various types of inch series square and hex nuts, including machine screw nuts and coupling nuts.
ASME B1.1 UNC & UNF Class 2B	Specifies the thread form, series, class, allowance, tolerance, and designation for unified screw threads.

Low Carbon Steel	Per SAE J995 2017-07
Diameter	Proof Load Stress (1)	Core Hardness
Diameter	psi	Rockwell
1/4 thru 1 1/2" UNC & 8UN	90,000	C32 Max
1/4 thru 1 1/2" UNF, 12UN and Finer	80,000	C32 Max

Per SAE J995 2017-07
Grade	Material	Carbon	Phosphorus	Sulfur
Grade	Material	% by weight	% by weight	% by weight
2	Low Carbon Steel	0.55 max	0.12 (1)	0.15 max (2)

Grade 2 Hex Nut

Technical Data

Governing Standards

Governing StandardsGrade 2

Mechanical Properties

Mechanical PropertiesGrade 2

Chemical Properties

Chemical PropertiesGrade 2

Dimensional Specifications

Dimensional SpecificationsGrade 2

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Diameter

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Width Across Flats

1/4-28 J995 GRADE 2 HEX NUT

5/16-24 J995 GRADE 2 HEX NUT

3/8-24 J995 GRADE 2 HEX NUT

1/2-20 J995 GRADE 2 HEX NUT

9/16-18 J995 GRADE 2 HEX NUT

2-12 J995 GRADE 2 HEX NUT