Model: MS51948-5

Ribbed Shoulder Bolt

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

1.380 inches

Fastener Length

Between 2.300 inches and 2.310 inches

Head Style

Flat chamfer

Head Diameter

Between 0.990 inches and 1.010 inches

Head Height

Between 0.190 inches and 0.210 inches

Shoulder Diameter

0.520 inches first shoulder and 0.525 inches first shoulder

Shoulder Length

0.775 inches first shoulder and 0.785 inches first shoulder

Rib Major Diameter

Between 0.550 inches and 0.560 inches

Rib Length

Between 0.310 inches and 0.330 inches

Distance From Largest Diameter Of Bearing Surface Of Head To Ribs

Between 0.050 inches and 0.070 inches

Rib Quantity

Thread Diameter

0.500 inches

Features Provided

Casehardened

Thready Qty Per Inch (tpi)

Hardness Rating

322.0 brinell standard and 363.0 brinell standard

Shoulder Shape

Round first shoulder

Material

Steel comp 1335 or steel comp 1340 or steel comp 4037 or steel comp 4135 or steel comp 8637 or steel comp 8640 or steel comp 8740

Material Specification

Astm a547 assn standard all material responses

Surface Treatment

Zinc and chromate or cadmium and chromate

Surface Treatment Specification

Qq-z-325, cl 2 federal specification 1st treatment response and qq-z-325, cl 2 federal specification 2nd treatment response or qq-p-416, cl 2 federal specification 3rd treatment response and qq-p-416, cl 2 federal specification 4th treatment response

Thread Series Designator

Unf

NSN

5306-01-026-5777

Part Number

MS51948-5

Description

Bolt,ribbed Shoulder

CAGE

96906

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 MS51948-5 NSN 5306-01-026-5777

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:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

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