PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FFS85AMEND2TYPE2STYLE10PGRADE5Screw,cap,hexagon Head

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5305-00-577-5453 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-577-5453 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-577-5453. Primary manufacturer part number: FFS85AMEND2TYPE2STYLE10PGRADE5.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Thread Quantity Per Inch: 10
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Thread Class: 2A A
  • Surface Treatment Document and Classification: MIL-C-16232,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Surface Treatment: PHOSPHATE OVERALL
  • Hardness Rating: 23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
  • Nominal Thread Diameter: 0.750 INCHES IN
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 5305-00-577-5453, 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 17 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-577-5453
Primary Part NumberFFS85AMEND2TYPE2STYLE10PGRADE5
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Thread Quantity Per Inch10
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread Class2A A
Surface Treatment Document and ClassificationMIL-C-16232,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Surface TreatmentPHOSPHATE OVERALL
Hardness Rating23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
Nominal Thread Diameter0.750 INCHES IN
MaterialSTEEL OVERALL
Minimum Yield Strength85000 POUNDS PER SQUARE INCH LBS
Head Height0.455 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN
Width Between Flats1.100 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
Fastener Length2.000 INCHES NOMINAL IN
Thread Length2.000 INCHES MAXIMUM IN
Head StyleHEXAGON
Minimum Tensile Strength120000 POUNDS PER SQUARE INCH LBS
Material Document and ClassificationSAE GR 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5305-00-017-9788 INTERCHANGEABLE
Screw,cap,hexagon Head
5306-00-018-0076 INTERCHANGEABLE
Bolt,machine
5305-00-543-2865 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-00-550-1311 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-00-638-9084 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-00-685-3193 INTERCHANGEABLE
Screw,cap,hexagon Head
Cross-Reference Index
Part NumberManufacturer
FFS85AMEND2TYPE2STYLE10PGRADE5 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
MS35299-187 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5305-00-017-9788INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5306-00-018-0076INTERCHANGEABLE
BOLT,MACHINE
5305-00-543-2865INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-00-550-1311INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-00-638-9084INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-00-685-3193INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD

Frequently Asked Questions

What is NSN 5305-00-577-5453?

NSN 5305-00-577-5453 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 5305-00-577-5453?

NSN 5305-00-577-5453 has 2 cross-referenced part numbers: FFS85AMEND2TYPE2STYLE10PGRADE5 (Federal Specifications Promulgated by General Services Administration Washington DC), MS35299-187 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5305-00-577-5453?

There are 6 known substitutes for 5305-00-577-5453: 5305-00-017-9788, 5306-00-018-0076, 5305-00-543-2865 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FFS85AMEND2TYPE2STYLE10PGRADE5?

Key specifications for FFS85AMEND2TYPE2STYLE10PGRADE5: Thread Quantity Per Inch: 10; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Thread Class: 2A A; Surface Treatment Document and Classification: MIL-C-16232,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 17 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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