LBS Catalog

First page Previous page 864 Next page Last page

Technical Information

HEX CAP SCREWS DIMENSIONAL DATA ANSI B18:2.1

Resources

THREADS TO CLASS 2A TOLERANCE

THREAD

THREADS PER INCH

PITCH DIAMETER

THREAD LENGTH

BODY DIAMETER

WIDTH ACROSS FLATS

HEIGHT OF HEAD

HEX ACROSS CORNERS

SIZE

Nom.

Min.

Max.

Min.

Max.

Nom.

Min.

Max.

Nom.

Min.

Max. Min.

Max.

NC NF NC NF NC NF NC NF NC NF NC NF NC NF NC NF NC NF NC NF NC NF NC NF NC NF NC NF

20 28 18 24 16 24 14 20 13 20 12 18 11 18 10 16

0.2127 0.2225 0.2712 0.2806 0.3287 0.3430 0.3850 0.3995 0.4435 0.4619 0.5016 0.5205 0.5589 0.5828 0.6773 0.7029 0.7946 0.8216 0.9100 0.9463 1.0228 1.0631 1.1476 1.1879 1.2563 1.3127 1.3812 1.4376

0.2164 0.2258 0.2752 0.2843 0.3331 0.3468 0.3897 0.4037 0.4485 0.4662 0.5068 0.5250 0.5644 0.5875 0.6832 0.7079 0.8009 0.8270 0.9168 0.9519 1.0300 1.0691 1.1550 1.1941 1.2643 1.3190 1.3893 1.4440

1/4

3/4

.2450

.2500

7/16

.4280

.4375

5/32

.150

.163

.488

.505

5/16

7/8

.3065

.3125

1/2

.4890

.5000

13/64

.195

.211

.557

.577

3/8

.3690

.3750

9/16

.5510

.5625

15/64

.226

.243

.628

.650

7/16

1-1/18

.4305

.4375

5/8

.6120

.6250

9/32

.272

.291

.698

.722

1/2

1-1/4

.4930

.5000

3/4

.7360

.7500

5/16

.302

.323

.840

.866

9/16

1-3/8

.5545

.5625

13/16

.7980

.8125

23/64

.348

.371

.910

.938

5/8

1-1/2

.6170

.6250

15/16

.9220

.9375

25/64

.378

.403

1.051

1.083

3/4

1-3/4

.7410

.7500

1-1/8

1.1000

1.1250

15/32

.455

.483

1.254

1.299

7/8

.8660

.8750

1-5/16

1.2850

1.3125

35/64

.531

.563

1.465

1.516

2-1/4

.9900

1.0000

1-1/2

1.4690

1.5000

39/64

.591

.627

1.675

1.732

1-1/8

2-1/2

1.1140

1.1250

1-11/16

1.6310

1.6875

11/16

.658

.718

1.859

1.949

1-1/4

2-3/4

1.2390

1.2500

1-7/8

1.8120

1.8750

25/32

.749

.813

2.066

2.165

1-3/8

1.3630

1.3750

2-1/16

1.9940

2.0625

27/32

.810

.878

2.273

2.382

1-1/2

3-1/4

1.4880

1.5000

2-1/4

2.1750

2.2500

15/16

.902

.974

2.480

2.598

ASTM, SAE AND ISO GRAD MARKINGS AND MECHANICAL PROPERTIES FOR STEEL FASTERNERS

Tensile Strength min.,ps i

Grade Marking

Specification

Material

Bolt and Screw Proof Load. Size in. psi

1/4 thru 1-1/2 1/4 thru 1-1/2

33,000 60,000

SAE-Grade 1 ASTM-A 307 SAE-Grade 2 SAE-Grade 5 ASTM-A 449

Low Carbon Steel

33,000

60,000 55,000

Over 1-1/2 thru 4

1/4 thru 3/4

55,000 74,000

Low Carbon Steel

Over 3/4 thru 1-1/2 33,000

60,000 120,000 105,000 120,000 105,000 90,000 120,000 115,000 105,000

1/4 thru 1

85,000

Assortments A-12 Fasteners F-72

Over 1 thru 1-1/2 74,000

Medium Carbon Steel, Quenched and Tempered

1/4 thru 1

85,000

Over 1 thru 1-1/2 74,000 Over 1-1/2 thru 3 55,000

Cutting Tools C-325

1/2, 5/8, 3/4

85,000 78,000 74,000

Medium Carbon Steel Quenched and Tempered

ASTM-A 325

7/8, 1

1-1/8 thru 1-1/2

Pipe Fittings P-541 Electrical E-704 Hydraulics H-745

SAE-Grade 8

Medium Carbon Alloy Steel, Quenched and Tempered Alloy Steel, Quenched and Tempered Alloy Steel, Quenched and Tempered

1/4 thru 1-1/2

120,000

150,000

ASTM-A 354 Grade BD

1/2 thru 2-1/2 120,000 150,000 Over 2-1/2 thru 4 105,000 140,000

ASTM-A 490

Abrasives AB-782 MRO M-833

ASTM Specifications

A 307- Low Carbon Steel Externally and Internally Threaded Standard Fasteners A 325- High Strength Steel Bolts for Structural Steel Joints, Including Suitable Nuts and Plain Hardened Washers. A 449 - Quenched and Tempered Steel Bolts and Studs A 490 - High Strength Alloy Steel Bolts for Structural Steel Joints, including Suitable Nuts and Plain Hardened Washers.

Tel: (225) 272-6200 Fax: (225) 272-7001

sales@lbsbr.com www.lightningboltandsupply.com

R-864

Made with FlippingBook - Online catalogs