PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

14978Washer,flat

Brinkley Technology Group Llc Dba Hercules Manufacturing · NSN 5310-01-056-1371 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-056-1371 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-056-1371. Primary manufacturer part number: 14978.
Features
  • Washer,flat — FSC 5310
  • Material: STEEL OR STEEL CORROSION RESISTING OVERALL
  • Peripheral Shape Style: ROUND
  • Hole Diameter: 0.344 INCHES NOMINAL IN
  • Overall Diameter: 0.875 INCHES NOMINAL IN
  • Center Hole Shape Style: ROUND
  • Cross-Sectional Shape Style: RECTANGULAR
  • Thickness: 0.125 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel or Steel Corrosion Resisting Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-056-1371, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Brinkley Technology Group Llc Dba Hercules Manufacturing. Government technical data includes 7 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-056-1371
Primary Part Number14978
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerBrinkley Technology Group Llc Dba Hercules Manufacturing
StatusACTIVE
MaterialSTEEL OR STEEL CORROSION RESISTING OVERALL
Peripheral Shape StyleROUND
Hole Diameter0.344 INCHES NOMINAL IN
Overall Diameter0.875 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Thickness0.125 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
3110-00-100-352618590 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
5110-00-180-0926 INTERCHANGEABLE
Punch,cutting,double Bow
3110-00-183-994618590-18520 INTERCHANGEABLE
Bearing,roller,tapered
The Timken Corporation
5950-00-193-8585 INTERCHANGEABLE
Transformer,power
5305-00-633-259214978 INTERCHANGEABLE
Setscrew
Mission Systems Orchard Park Inc
1560-00-872-447314978 INTERCHANGEABLE
Stringer,fuselage
Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company
5330-00-910-3112 INTERCHANGEABLE
Seal,plain Encased
4935-01-135-9268 INTERCHANGEABLE
Retainer,pully
6145-01-177-59545304C INTERCHANGEABLE
Cable,special Purpose,electrical
Belden, Inc.
Cross-Reference Index
Part NumberManufacturer
14978 Hercules Engine Co Inc (USA)
14978 PRIMARY Brinkley Technology Group Llc Dba Hercules Manufacturing (USA)
Related Parts
3110-00-100-3526INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
18590
5110-00-180-0926INTERCHANGEABLE
PUNCH,CUTTING,DOUBLE BOW
3110-00-183-9946INTERCHANGEABLE
BEARING,ROLLER,TAPERED
18590-18520
5950-00-193-8585INTERCHANGEABLE
TRANSFORMER,POWER
5305-00-633-2592INTERCHANGEABLE
SETSCREW
14978
1560-00-872-4473INTERCHANGEABLE
STRINGER,FUSELAGE
14978
5330-00-910-3112INTERCHANGEABLE
SEAL,PLAIN ENCASED
4935-01-135-9268INTERCHANGEABLE
RETAINER,PULLY
6145-01-177-5954INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
5304C

Frequently Asked Questions

What is NSN 5310-01-056-1371?

NSN 5310-01-056-1371 is a Washer,flat, manufactured by Brinkley Technology Group Llc Dba Hercules Manufacturing, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-056-1371?

NSN 5310-01-056-1371 has 2 cross-referenced part numbers: 14978 (Hercules Engine Co Inc), 14978 (Brinkley Technology Group Llc Dba Hercules Manufacturing).

What NSN replaces 5310-01-056-1371?

There are 9 known substitutes for 5310-01-056-1371: 3110-00-100-3526, 5110-00-180-0926, 3110-00-183-9946 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 14978?

Key specifications for 14978: Material: STEEL OR STEEL CORROSION RESISTING OVERALL; Peripheral Shape Style: ROUND; Hole Diameter: 0.344 INCHES NOMINAL IN; Overall Diameter: 0.875 INCHES NOMINAL IN. 7 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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