Model: 3F21256-101

Square Neck Bolt

Special Features:

One 0.069 in. Diameter hole through shank located 0.710in. From head

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

2.060 inches

Fastener Length

2.970 inches

Head Style

Flat countersunk

Head Diameter

0.875 inches

Neck Length

0.410 inches

Thread Diameter

0.500 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

200000 pounds per square inch

Countersink Angle

80.0 degrees

Neck Width

0.500 inches

Material

Steel comp 4140

Thread Series Designator

Unf

NSN

5306-00-908-9454

Part Number

3F21256-101

Description

Bolt,square Neck

CAGE

98897

A headed externally threaded fastener whose threaded portion is of one nominal diameter, with a square neck directly beneath the head.

Part 3F21256-101 NSN 5306-00-908-9454

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

15939

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:

0.2000lbs

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:

095190

UFC:

49790

LTL:

70.0

LCL:

WCC:

713

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