Model: T28745

Ribbed Shoulder Bolt

Special Features:

Unthreaded portion below head 0.180 inch long. Shank below second shoulder 0.340 inch min, 0.350 inch max dia; 0.480 inch long

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.940 inches

Fastener Length

2.560 inches

Head Diameter

0.240 inches

Shoulder Diameter

0.384 inches and 0.389 inches first shoulder

Shoulder Diameter

0.381 inches and 0.382 inches

Shoulder Length

0.160 inches and 0.240 inches first shoulder

Shoulder Length

0.760 inches second shoulder

Thread Diameter

0.375 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

12700 pounds per square inch

Hardness Rating

32.0 rockwell c and 38.0 rockwell c

Shoulder Shape

Ribbed first shoulder

Shoulder Shape

Round second shoulder

Material

Steel comp 8637 or steel comp 8640

Material Specification

Sae assn standard all material responses

Thread Series Designator

Unf

NSN

5306-01-219-7163

Part Number

T28745

Description

Bolt,ribbed Shoulder

CAGE

75160

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 T28745 NSN 5306-01-219-7163

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