Model: 278-65B

Clevis Bolt

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.344 inches

Fastener Length

4.406 inches

Head Style

Button

Head Diameter

0.500 inches

Head Height

0.125 inches

Groove Diameter

0.196 inches

Shank Unthreaded Hole Diameter

0.076 inches first hole

Single Shear Strength

3680 pounds per square inch

Internal Drive Style

Slot

Thread Diameter

0.250 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

125000 pounds per square inch

Hardness Rating

26.0 rockwell c and 32.0 rockwell c

Distance From Head Largest Bearing Surface To Shank Hole Center

4.250 inches first hole

Material

Steel comp 4037 or steel comp 4130 or steel comp 8630 or steel comp 8735 or steel comp 8740 or steel comp 4140

Material Specification

Mil-b-6812 military specification all material responses

Surface Treatment

Cadmium and chromate

Surface Treatment Specification

Qq-p-416, type 2, cl 3 federal specification single treatment response

Thread Series Designator

Unf

Departure From Cited Document

Thread t per mil-s-7742 except major diameter is not to exceed max allow shank bolt dia

NSN

5306-00-174-3976

Part Number

278-65B

Description

Bolt,clevis

CAGE

56705

An externally threaded fastener whose threaded and unthreaded portions are of one nominal diameter and are separated by a narrow circumferential groove. The head is designed to be held or driven with an inserted driver. Excludes bolt, shear.

Part 278-65B NSN 5306-00-174-3976

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

06662

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