Model: 990106-255

Machine Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.188 inches and 0.250 inches

Fastener Length

Between 0.219 inches and 0.250 inches

Head Style

Pan

Head Diameter

Between 0.256 inches and 0.270 inches

Head Height

Between 0.087 inches and 0.097 inches

Internal Drive Style

Cross recess type 1

End Application

W/s: mk 28, 5-inch 38 caliber twin gun mount; helicopter, mh-53e; deep submergence systems programs (dssp); landing craft, utility, 115 ft; helicopter, search and rescue, hh-60h; helicopter, uscg search and rescue, hh-60j; fire pumps; aircraft (ac-130h, mc-130h, ec-130e, hc-130); helicopter, carrier based asw, sh-60f

Thread Diameter

0.138 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

57000 pounds per square inch

Screw Material

Copper alloy

Screw Material Specification

Qq-b-626 federal specification single material response or qq-w-321 federal specification single material response

Thread Series Designator

Unc

NSN

5305-00-059-8248

Part Number

990106-255

Description

Screw,machine

CAGE

D9182

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.

Part 990106-255 NSN 5305-00-059-8248

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

06657

FIIG:

A500D0

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:

096630

UFC:

50590

LTL:

70.0

LCL:

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