Model: HT8138-3-5T

Close Tolerance Screw

Special Features:

Internal drive ribbed

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.313 inches and 0.380 inches

Fastener Length

Between 0.635 inches and 0.682 inches

Head Style

Flat countersunk

Head Diameter

Between 0.350 inches and 0.381 inches

Grip Diameter

Between 0.1885 inches and 0.1895 inches

Shank Unthreaded Hole Diameter

0.070 inches first hole and 0.080 inches first hole

Shank Unthreaded Hole Diameter

0.070 inches and 0.080 inches first hole

Internal Drive Style

High-torque

Thread Diameter

0.190 inches

Grip Length

Between 0.302 inches and 0.322 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

160000 pounds per square inch

Hardness Rating

36.0 rockwell c and 40.0 rockwell c

Hardness Rating

36.0 rockwell c and 40.0 rockwell c

Countersink Angle

Between 99.0 degrees and 101.0 degrees

Distance From Head Largest Bearing Surface To Shank Hole Center

0.462 inches first hole and 0.529 inches first hole

Distance From Head Largest Bearing Surface To Shank Hole Center

0.462 inches and 0.529 inches first hole

Surface Finish

32.0 microinches bearing surface of head

Surface Finish

32.0 microinches threads

Part Name Assigned By Controlling Agency

Navy special project

Material

Steel comp 4140 or steel comp e4340 or steel comp 6150 or steel comp 8735 or steel comp 8740

Material

Steel comp 4140 or steel comp e4340 or steel comp 6150 or steel comp 8735 or steel comp 8740

Material Specification

Mil-s-5626 military specification 1st material response or mil-s-5000 military specification 2nd material response or mil-s-8503 military specification 3rd material response or mil-s-6098 military specification 4th material response or mil-s-6049 military specification 5th material response

Material Specification

Surface Treatment

Cadmium and chromate

Surface Treatment Specification

Qq-p-416, type 2 class 3 federal specification all treatment responses

Thread Series Designator

Unf

NSN

5305-00-090-4080

Part Number

HT8138-3-5T

Description

Screw,close Tolerance

CAGE

06950

Part HT8138-3-5T NSN 5305-00-090-4080

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

29294

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:

713

TCC:

SHC:

ACC:

Construction Materials

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