Model: 538157

Ribbed Shoulder Bolt

Special Features:

Head o/0.187 in. Lg extended washer

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.940 inches

Fastener Length

6.610 inches

Head Diameter

1.000 inches

Head Height

0.374 inches

Width Between Flats

0.250 inches

Shoulder Diameter

0.706 inches second shoulder and 0.707 inches second shoulder

Shoulder Diameter

0.706 inches first shoulder and 0.707 inches first shoulder

Shoulder Length

0.250 inches second shoulder

Shoulder Length

2.270 inches first shoulder

Rib Major Diameter

Between 0.706 inches and 0.707 inches

Rib Length

0.250 inches

Distance From Largest Diameter Of Bearing Surface Of Head To Ribs

5.360 inches

Rib Minor Diameter

0.641 inches

Rib Quantity

Thread Diameter

0.625 inches

Features Provided

Casehardened

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

200000 pounds per square inch

Shoulder Shape

Ribbed second shoulder

Shoulder Shape

Round first shoulder

Material

Steel

Material Specification

Ams6415 assn standard single material response or mil-s-5000 military specification single material response

Surface Treatment

Cadmium or chromium

Surface Treatment Specification

Qq-p-416 type 1 federal specification 1st treatment response or mil-p-6871 military specification 2nd treatment response

Thread Series Designator

Unf

NSN

5306-00-304-6121

Part Number

538157

Description

Bolt,ribbed Shoulder

CAGE

17576

An externally threaded fastener whose threaded portion is of one nominal diameter. It has a series of longitudinal ribs, splines or serrations on all or a part of the shoulder. The minor diameter of the ribs must be greater than the major diameter of the threads. See also bolt, ribbed neck.

Part 538157 NSN 5306-00-304-6121

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

16014

FIIG:

A003B0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

093486

UFC:

48950

LTL:

RATING VARIABLE

LCL:

WCC:

573

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7318152000
SITC: 69421
End Use: Iron and steel products, other
NAICS: 332722
USDA: 1

Freight Class: Bolts and bolts and their nuts or washers exported in the same shipment