Model: MS16998-28

Socket Head Cap Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.533 inches and 0.625 inches

Fastener Length

Between 0.595 inches and 0.625 inches

Head Style

Flat chamfer

Head Diameter

Between 0.303 inches and 0.312 inches

Head Height

Between 0.185 inches and 0.190 inches

Internal Drive Style

Hexagon

End Application

W/s: aircraft, c-2a (reprocured); engine, aircraft tf33-pw-102 (c-135e, ec-135h/k/p); engine aircraft tf33-p-3/5/9 (c/ec-135, b-52h); aircraft (ac-130h, mc-130h, ec-130e, hc-130); missile, all-weather anti-ship, harpoon (agm-84); trainer, b-1b aircraft; torpedo, mk-48; engine, aircraft, f100 pw220 (f-15c/d/e); missile, air-to-air, phoenix (aim-54); engine, aircraft, tf33-100 (e3a/b/c)

Thread Diameter

0.190 inches

Width Across Flats

Between 0.156 inches and 0.159 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

180000 pounds per square inch

Hardness Rating

36.0 rockwell c and 45.0 rockwell c

Minimum Yield Strength

155000 pounds per square inch

Material

Steel

Surface Treatment

Cadmium and chromate

Surface Treatment Specification

Ams-qq-p-416, type 2, cl 2 federal specification single treatment response

Thread Series Designator

Unrf

Specification Data

80205-nas1357 professional/industrial association standard

NSN

5305-00-058-0505

Part Number

MS16998-28

Description

Screw,cap,socket Head

CAGE

96906

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See bolt, internal wrenching. Excludes screw, shoulder; and screw, machine.

Part MS16998-28 NSN 5305-00-058-0505

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

16282

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:

1.0000lbs

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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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