Model: 1255B61-1

Hexagon Head Cap Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.070 inches

Fastener Length

0.095 inches

Head Style

Hexagon

Head Height

0.046 inches

Width Between Flats

0.156 inches

Thread Diameter

0.060 inches

Thready Qty Per Inch (tpi)

Surface Finish

32.0 microinches top of head

Material

Copper alloy 230 or copper alloy 240 or copper alloy 260 or copper alloy 268 or copper alloy 342 or copper alloy 353 or copper alloy 360 or copper alloy 377

Material Specification

Qq-b-626, 1/2 hard federal specification all material responses

Thread Series Designator

Unf

NSN

5305-01-006-9774

Part Number

1255B61-1

Description

Screw,cap,hexagon Head

CAGE

89944

An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. the threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. the thread length being the controlled dimension, the grip length is not specified. a locking feature may be incorporated in the design of the head or threads. the head is not designed to be held or driven with an inserted driver or by the thumb and fingers. excludes bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.

Part 1255B61-1 NSN 5305-01-006-9774

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

18257

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:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

096630

UFC:

50590

LTL:

70.0

LCL:

70.0

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7415338550
SITC: 69433
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Other copper screws (not for wood) bolts and nuts