Model: MS16998-43

Socket Head Cap Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.648 inches and 0.750 inches

Fastener Length

Between 0.719 inches and 0.750 inches

Head Style

Flat chamfer

Head Diameter

Between 0.365 inches and 0.375 inches

Head Height

Between 0.244 inches and 0.250 inches

Internal Drive Style

Hexagon

Thread Diameter

0.250 inches

Width Across Flats

Between 0.187 inches and 0.190 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

160000 pounds per square inch

Hardness Rating

38.0 rockwell c and 45.0 rockwell c

Minimum Yield Strength

150000 pounds per square inch

Material

Steel

Surface Treatment

Cadmium and chromate

Surface Treatment Specification

Qq-p-416 type 2 cl 3 federal specification single treatment response

Thread Series Designator

Unf

Nondefinitive Specification/std Data

6 type

NSN

5305-00-983-6660

Part Number

MS16998-43

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 MS16998-43 NSN 5305-00-983-6660

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:

1.4000lbs

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

End Items End applications NSN 5305-00-983-6660 is a component of

Close In Weapon System (ciws-phalanx)
B-1 Aircraft Support Equipment
Hc-130) Ec-130e Mc-130h Sof ( Ac-130h Aircraft
B-1b Aircraft Trainer
Phoenix (aim-54) Air-to-air Missile
Model Xm1117 Armored Security Vehicle
F100-pw-100 (f-15a/b/c/d) Aircraft Engine
An/uyq-21(v) Computer Display Set
Mh-53e Helicopter
010703859
Surveillance Radar
002237548
Radio Set
011483977
Radio Terminal Set
010039869
Aircraft Hydraulic System Components Fixture
013080872
Servocylinder
013199032
Trailer Mounted Diesel Engine Generator Set
013056917
Hydraulic System Components Test Stand
012755061
Diesel Engine Generator Set
013080871
Servocylinder
010345000
Hydraulic Axial Piston Pump Subassembly
014186654
Full Tracked Personnel Carrier
010638251
Turbine Assembly
012291277
Radar Set
013080867
Servocylinder
013080869
Servocylinder
012543537
Leveling-support Jack
013683237
Aircraft Maintenance Fixture
000062765
Aerial Camera Lens Cone
013080870
Servocylinder
004504819
Hydraulic Motor-pump
013080868
Servocylinder
000077955
Compressor
000632862
Aircraft Mooring Tie Down
011483976
Radio Terminal Set
011453870
Radar Set Subassembly
011519927
Remote Ground Termi
007181254
Axial Pistons Pump Unit
011680334
Aircraft Cooling Turbine
005430012
Telephone Set
010845293
Antenna-transceiver
010365479
Alternating Current Motor
001745811
Axial Pistons Pump Unit
014766466
Vaneaxial Fan
010055388
Control Test Set
010061788
Aircraft Maintenance Fixture Set
004396242
Full Tracked Recovery Vehicle
011607245
Aircraft Cooling Turbine
010375364
Vaneaxial Fan
005725583
Radar Set Control
011350360
Aircraft Ejection Seat
010883669
Cargo-transport Helicopter
010375363
Vaneaxial Fan
000331389
Trailer Mounted Diesel Engine Generator Set
013469317
Utility Truck
001596180
Symbol Si Generator
011334195
Radio Set
010883669
Cargo-transport Helicopter
011014704
Air Conditioner
011603076
Electronic Equipment Pressurizing Set
011210604
Bench Test Set
010851604
Acquisition Antenna-receiver-transmitter Group
012246595
Servocylinder
012246588
Hydraulic Servocylinder Assembly
010046550
Aerial Stores Lift Truck
013852716
Tubular Fairlead
011493208
Azimuth-elevation Indicator
011062283
Circulating Fan
010217084
Ta Optical Assembly
007990148
Gas Turbine Engine Power Unit
011035641
Air-antitank Defense Missile System Carrier
010078060
Aircraft Hydraulic System Components Fixture
010081513
Aircraft Hydraulic System Components Fixture
010423317
Antenna System Test Set
004651030
Diesel Engine Generator Set
013851977
Ammunition Transfer Unit
013866836
Electrical Equipment Mounting Base
009294308
Aircraft Mounted Winch
008689363
Radar Set Subassembly
014606545
Ammunition Transfer Unit
011035641
Air-antitank Defense Missile System Carrier
011035641
Air-antitank Defense Missile System Carrier
014831859
Reciprocating Compressor
011367598
Aircraft Ejection Seat
001195587
Hydraulic System Components Test Stand
008521425
Ammunition Maintenance Fixture
012531336
Roller Bearing Unit
013652196
Antenna Element
010775723
Radar Receiving Set

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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