Model: MS51948-4

Ribbed Shoulder Bolt

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.930 inches

Fastener Length

Between 1.740 inches and 1.750 inches

Head Style

Flat chamfer

Head Diameter

0.800 inches

Head Height

0.250 inches

Shoulder Diameter

0.535 inches first shoulder and 0.540 inches first shoulder

Shoulder Length

0.690 inches first shoulder and 0.700 inches first shoulder

Rib Major Diameter

Between 0.550 inches and 0.560 inches

Rib Length

0.120 inches

Distance From Largest Diameter Of Bearing Surface Of Head To Ribs

0.090 inches

Rib Minor Diameter

Between 0.535 inches and 0.540 inches

Rib Quantity

Thread Diameter

0.500 inches

Thready Qty Per Inch (tpi)

Hardness Rating

78.0 rockwell superficial 15-n and 84.0 rockwell superficial 15-n

Shoulder Shape

Ribbed 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 8735 or steel comp 8740

Material Specification

Qq-w-405 federal specification 1st material response or astm a322 assn standard 1st material response or qq-w-405 federal specification 2nd material response or astm a322 assn standard 2nd material response or qq-w-405 federal specification 3rd material response or astm a322 assn standard 3rd material response or qq-w-405 federal specification 4th material response or qq-w-405 federal specification 5th material response or astm a322 assn standard 5th material response or qq-w-405 federal specification 6th material response or qq-w-405 federal specification 7th material response or qq-w-405 federal specification 8th material response or astm a322 assn standard 8th material response

Surface Treatment

Cadmium and chromate or zinc and chromate

Surface Treatment Specification

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

Thread Series Designator

Unf

NSN

5306-01-008-4195

Part Number

MS51948-4

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 MS51948-4 NSN 5306-01-008-4195

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