PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FFS85TYPE11STYLE10PScrew,cap,hexagon Head

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5305-00-226-9229 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-226-9229 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-226-9229. Primary manufacturer part number: FFS85TYPE11STYLE10P.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Fastener Length: 1.750 INCHES NOMINAL IN
  • Width Between Flats: 1.285 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN
  • Head Height: 0.531 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Material: NICKEL ALLOY 400 OR NICKEL ALLOY R-405 OVERALL
  • Material Document and Classification: QQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL
  • Thread Length: 1.750 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Nickel Alloy 400 or Nickel Alloy R-405 Overall construction
General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-226-9229, 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 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-226-9229
Primary Part NumberFFS85TYPE11STYLE10P
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Fastener Length1.750 INCHES NOMINAL IN
Width Between Flats1.285 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN
Head Height0.531 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
MaterialNICKEL ALLOY 400 OR NICKEL ALLOY R-405 OVERALL
Material Document and ClassificationQQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL
Thread Length1.750 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Thread Quantity Per Inch9
Thread Class2A A
Nominal Thread Diameter0.875 INCHES IN
Head StyleHEXAGON
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5305-00-582-95014201-87-23 INTERCHANGEABLE
Screw,cap,hexagon Head
L3harris Cincinnati Electronics Corporation
Cross-Reference Index
Part NumberManufacturer
FFS85TYPE11STYLE10P Federal Specifications Promulgated by General Services Administration Washington DC (USA)
MS35311-208 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
318272-54 Lockheed Martin Librascope Corporation (USA)
Related Parts
5305-00-582-9501INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
4201-87-23

Frequently Asked Questions

What is NSN 5305-00-226-9229?

NSN 5305-00-226-9229 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 5305-00-226-9229?

NSN 5305-00-226-9229 has 3 cross-referenced part numbers: FFS85TYPE11STYLE10P (Federal Specifications Promulgated by General Services Administration Washington DC), MS35311-208 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 318272-54 (Lockheed Martin Librascope Corporation).

What NSN replaces 5305-00-226-9229?

There is 1 known substitute for 5305-00-226-9229: 5305-00-582-9501. Verify interchangeability with system specifications before substitution.

What are the specifications of FFS85TYPE11STYLE10P?

Key specifications for FFS85TYPE11STYLE10P: Fastener Length: 1.750 INCHES NOMINAL IN; Width Between Flats: 1.285 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN; Head Height: 0.531 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC). 12 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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