PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

P644Screw,cap,hexagon Head

Bae Systems Land & Armaments L.p. · NSN 5305-00-012-0706 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-012-0706 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-012-0706. Primary manufacturer part number: P644.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Width Between Flats: 0.438 INCHES NOMINAL IN
  • Thread Direction: RIGHT-HAND
  • Material Document and Classification: SAE GR 1 OR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Material: STEEL OVERALL
  • Nondefinitive Spec/std Data: 2 TYPE AND 10P STYLE
  • Thread Quantity Per Inch: 20
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-012-0706, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Bae Systems Land & Armaments L.p.. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-012-0706
Primary Part NumberP644
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerBae Systems Land & Armaments L.p.
StatusACTIVE
Width Between Flats0.438 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Material Document and ClassificationSAE GR 1 OR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MaterialSTEEL OVERALL
Nondefinitive Spec/std Data2 TYPE AND 10P STYLE
Thread Quantity Per Inch20
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Surface TreatmentCADMIUM OVERALL
Fastener Length0.500 INCHES NOMINAL IN
Head StyleHEXAGON
Nominal Thread Diameter0.250 INCHES IN
Thread Class2A A
Head Height0.156 INCHES NOMINAL IN
Thread Length0.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
6685-00-052-7378164434 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ametek, Inc. Div Aerospace & Defense
5305-00-071-2506AES01C250500AW9A91 INTERCHANGEABLE
Screw,cap,hexagon Head
The American Society of Mechanical Engineers
4720-00-231-734620451 INTERCHANGEABLE
Hose,preformed
Gates Corporation
5905-00-255-9403710-1095-010 INTERCHANGEABLE
Resistor,fixed,wire Wound
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
6685-00-563-7475 INTERCHANGEABLE
Gage,pressure,dial Indicating
5331-01-269-8569P64-4 INTERCHANGEABLE
O-Ring
Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc
6140-01-513-9913P00864 INTERCHANGEABLE
Battery,storage
General Atomics Aeronautical Systems, Inc.
6105-01-597-5992120706 INTERCHANGEABLE
Motor,power Steer Pump
Crown Equipment Corp Dba Crown Lift Trucks Div Government Sales Department
Cross-Reference Index
Part NumberManufacturer
120706 General Motors Corp (USA)
P644 Fmc Corp (USA)
FFS85TYPE2STYLE10P Federal Specifications Promulgated by General Services Administration Washington DC (USA)
P644 PRIMARY Bae Systems Land & Armaments L.p. (USA)
92499 PRIMARY Briggs and Stratton Corp (USA)
120706 General Motors Llc Dba General Motors Llc (USA)
Related Parts
6685-00-052-7378INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
164434
5305-00-071-2506INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
AES01C250500AW9A91
4720-00-231-7346INTERCHANGEABLE
HOSE,PREFORMED
20451
5905-00-255-9403INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
710-1095-010
6685-00-563-7475INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
5331-01-269-8569INTERCHANGEABLE
O-RING
P64-4
6140-01-513-9913INTERCHANGEABLE
BATTERY,STORAGE
P00864
6105-01-597-5992INTERCHANGEABLE
MOTOR,POWER STEER PUMP
120706

Frequently Asked Questions

What is NSN 5305-00-012-0706?

NSN 5305-00-012-0706 is a Screw,cap,hexagon Head, manufactured by Bae Systems Land & Armaments L.p., classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-012-0706?

NSN 5305-00-012-0706 has 6 cross-referenced part numbers: 120706 (General Motors Corp), P644 (Fmc Corp), FFS85TYPE2STYLE10P (Federal Specifications Promulgated by General Services Administration Washington DC), P644 (Bae Systems Land & Armaments L.p.), 92499 (Briggs and Stratton Corp) and 1 more.

What NSN replaces 5305-00-012-0706?

There are 8 known substitutes for 5305-00-012-0706: 6685-00-052-7378, 5305-00-071-2506, 4720-00-231-7346 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of P644?

Key specifications for P644: Width Between Flats: 0.438 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND; Material Document and Classification: SAE GR 1 OR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Material: STEEL OVERALL. 14 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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