PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FF-S-85 TY II ST 10PScrew,cap,hexagon Head

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5305-00-951-8653 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-951-8653 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-951-8653. Primary manufacturer part number: FF-S-85 TY II ST 10P.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Thread Length: 1.062 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
  • Surface Treatment Document and Classification: MIL-C-16232,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Minimum Tensile Strength: 150000 POUNDS PER SQUARE INCH LBS
  • Head Height: 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN
  • Material Document and Classification: SAE GR 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Hole Configuration Style: HEXAGON FLATS
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 5305-00-951-8653, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Federal Specifications Promulgated by General Services Administration Washington DC. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-951-8653
Primary Part NumberFF-S-85 TY II ST 10P
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Thread Length1.062 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationMIL-C-16232,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Minimum Tensile Strength150000 POUNDS PER SQUARE INCH LBS
Head Height0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN
Material Document and ClassificationSAE GR 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Hole Configuration StyleHEXAGON FLATS
MaterialSTEEL OVERALL
Minimum Yield Strength120000 POUNDS PER SQUARE INCH LBS
Head StyleHEXAGON
Fastener Length1.250 INCHES NOMINAL IN
Hole Quantity1
Nominal Thread Diameter0.500 INCHES IN
Surface TreatmentPHOSPHATE OVERALL
Thread DirectionRIGHT-HAND
Hardness Rating32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
Width Between Flats0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
Thread Quantity Per Inch13
Hole Diameter0.094 INCHES NOMINAL IN
Thread Class2A A
Hole TypeDRILLED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5305-00-012-1793 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-00-207-0896 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-00-400-8347 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-00-838-80087392853 INTERCHANGEABLE
Screw,cap,hexagon Head
U S Army Tank Automotive Command Amsta-Im-Mm
Cross-Reference Index
Part NumberManufacturer
FF-S-85 TY II ST 10P Federal Specifications Promulgated by General Services Administration Washington DC (USA)
MS51097-113 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5305-00-012-1793INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-00-207-0896INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-00-400-8347INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-00-838-8008INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
7392853

Frequently Asked Questions

What is NSN 5305-00-951-8653?

NSN 5305-00-951-8653 is a Screw,cap,hexagon Head, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-951-8653?

NSN 5305-00-951-8653 has 2 cross-referenced part numbers: FF-S-85 TY II ST 10P (Federal Specifications Promulgated by General Services Administration Washington DC), MS51097-113 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5305-00-951-8653?

There are 4 known substitutes for 5305-00-951-8653: 5305-00-012-1793, 5305-00-207-0896, 5305-00-400-8347 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FF-S-85 TY II ST 10P?

Key specifications for FF-S-85 TY II ST 10P: Thread Length: 1.062 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-16232,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Minimum Tensile Strength: 150000 POUNDS PER SQUARE INCH LBS. 21 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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