PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FF-S-85Screw,cap,hexagon Head

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5305-00-010-0059 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-010-0059 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-010-0059. Primary manufacturer part number: FF-S-85.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Thread Direction: RIGHT-HAND
  • Minimum Tensile Strength: 69000 POUNDS PER SQUARE INCH LBS
  • Thread Quantity Per Inch: 20
  • Nondefinitive Spec/std Data: 2 TYPE AND 10P STYLE
  • Hardness Rating: 100.0 ROCKWELL B MAXIMUM OVERALL
  • Thread Series Designator: UNF
  • Material: STEEL OVERALL
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 5305-00-010-0059, 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 15 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-010-0059
Primary Part NumberFF-S-85
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Thread DirectionRIGHT-HAND
Minimum Tensile Strength69000 POUNDS PER SQUARE INCH LBS
Thread Quantity Per Inch20
Nondefinitive Spec/std Data2 TYPE AND 10P STYLE
Hardness Rating100.0 ROCKWELL B MAXIMUM OVERALL
Thread Series DesignatorUNF
MaterialSTEEL OVERALL
Material Document and ClassificationSAE GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Width Between Flats0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
Fastener Length4.500 INCHES NOMINAL IN
Nominal Thread Diameter0.500 INCHES IN
Thread Class2A A
Head StyleHEXAGON
Thread Length1.250 INCHES MINIMUM IN
Head Height0.312 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
9905-00-085-0566100059 INTERCHANGEABLE
Plate,identification
Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc
3110-00-100-0719 INTERCHANGEABLE
Cone and Rollers,tapered Roller
2540-00-262-831890335 INTERCHANGEABLE
Guard,splash,vehicular
Gates Corporation
5340-00-311-8426 INTERCHANGEABLE
Cap,protective,dust and Moisture
5320-00-346-3774HL731PB8-10 INTERCHANGEABLE
Pin-Rivet
Howmet Global Fastening Systems Inc
5895-00-620-7209100059 INTERCHANGEABLE
Frequency Converter-Transmitter
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5910-00-810-0818 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
2530-01-442-8082CA053 INTERCHANGEABLE
Wheel Segment,pneumatic Tire
Flo-Products Company Div Gsi Flo
4730-01-651-8970100-059 INTERCHANGEABLE
Adapter,straight,pipe to Gas Fit
Hydro-Test Products, Inc. Dba Hydro-Test Products Inc
1005-01-693-6186100-059 INTERCHANGEABLE
Light Mount
Reptilia Llc
Cross-Reference Index
Part NumberManufacturer
FF-S-85 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
100059 Army Weapons Command Attn Amswe-Ree-S (USA)
Related Parts
9905-00-085-0566INTERCHANGEABLE
PLATE,IDENTIFICATION
100059
3110-00-100-0719INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
2540-00-262-8318INTERCHANGEABLE
GUARD,SPLASH,VEHICULAR
90335
5340-00-311-8426INTERCHANGEABLE
CAP,PROTECTIVE,DUST AND MOISTURE
5320-00-346-3774INTERCHANGEABLE
PIN-RIVET
HL731PB8-10
5895-00-620-7209INTERCHANGEABLE
FREQUENCY CONVERTER-TRANSMITTER
100059
5910-00-810-0818INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
2530-01-442-8082INTERCHANGEABLE
WHEEL SEGMENT,PNEUMATIC TIRE
CA053
4730-01-651-8970INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO GAS FIT
100-059
1005-01-693-6186INTERCHANGEABLE
LIGHT MOUNT
100-059

Frequently Asked Questions

What is NSN 5305-00-010-0059?

NSN 5305-00-010-0059 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 5305-00-010-0059?

NSN 5305-00-010-0059 has 2 cross-referenced part numbers: FF-S-85 (Federal Specifications Promulgated by General Services Administration Washington DC), 100059 (Army Weapons Command Attn Amswe-Ree-S).

What NSN replaces 5305-00-010-0059?

There are 10 known substitutes for 5305-00-010-0059: 9905-00-085-0566, 3110-00-100-0719, 2540-00-262-8318 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FF-S-85?

Key specifications for FF-S-85: Thread Direction: RIGHT-HAND; Minimum Tensile Strength: 69000 POUNDS PER SQUARE INCH LBS; Thread Quantity Per Inch: 20; Nondefinitive Spec/std Data: 2 TYPE AND 10P STYLE. 15 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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