PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12759-00123Washer,flat

Fastenal Company Dba Fastenal Co · NSN 5310-01-557-0948 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-557-0948 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-557-0948. Primary manufacturer part number: 12759-00123.
Features
  • Washer,flat — FSC 5310
  • Material: STEEL OVERALL
  • Supplementary Features: MATERIAL = LOW CARBON STEEL. MILD ZINC COATING WITH COLORLESS CHROMATE CONVERSION COATINGS. PRODUCT WEIGHT = .0378LBS LBS
  • Surface Treatment: ZINC OVERALL
  • Hole Diameter: 21.165 MILLIMETERS NOMINAL MM
  • Overall Diameter: 36.6 MILLIMETERS NOMINAL MM
  • Center Hole Shape Style: ROUND
  • Specification/standard Data: D8286-DIN 125, TYPE A PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-557-0948, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Fastenal Company Dba Fastenal Co. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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
NSN5310-01-557-0948
Primary Part Number12759-00123
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerFastenal Company Dba Fastenal Co
StatusACTIVE
MaterialSTEEL OVERALL
Supplementary FeaturesMATERIAL = LOW CARBON STEEL. MILD ZINC COATING WITH COLORLESS CHROMATE CONVERSION COATINGS. PRODUCT WEIGHT = .0378LBS LBS
Surface TreatmentZINC OVERALL
Hole Diameter21.165 MILLIMETERS NOMINAL MM
Overall Diameter36.6 MILLIMETERS NOMINAL MM
Center Hole Shape StyleROUND
Specification/standard DataD8286-DIN 125, TYPE A PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5305-00-208-3927 INTERCHANGEABLE
Screw,cap,socket Head
6930-00-480-300340363 INTERCHANGEABLE
Drum Assy
Instruments and Flight Research, Inc.
5310-01-249-720740363 INTERCHANGEABLE
Nut,self-Locking,hexagon
Tld Wollard Llc
5895-01-377-71051219739-207 INTERCHANGEABLE
Modem,communications
Lockheed Martin Corporation Div Rms - Mitchel Field
Cross-Reference Index
Part NumberManufacturer
2000846 General Dynamics Land Systems - Force Protection Inc. Dba Gdls Div Gdls-Fp (USA)
40363 Fastenal Company Dba Fastenal Co (USA)
12759-00123 PRIMARY Fastenal Company Dba Fastenal Co (USA)
Related Parts
5305-00-208-3927INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
6930-00-480-3003INTERCHANGEABLE
DRUM ASSY
40363
5310-01-249-7207INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
40363
5895-01-377-7105INTERCHANGEABLE
MODEM,COMMUNICATIONS
1219739-207

Frequently Asked Questions

What is NSN 5310-01-557-0948?

NSN 5310-01-557-0948 is a Washer,flat, manufactured by Fastenal Company Dba Fastenal Co, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-557-0948?

NSN 5310-01-557-0948 has 3 cross-referenced part numbers: 2000846 (General Dynamics Land Systems - Force Protection Inc. Dba Gdls Div Gdls-Fp), 40363 (Fastenal Company Dba Fastenal Co), 12759-00123 (Fastenal Company Dba Fastenal Co).

What NSN replaces 5310-01-557-0948?

There are 4 known substitutes for 5310-01-557-0948: 5305-00-208-3927, 6930-00-480-3003, 5310-01-249-7207 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12759-00123?

Key specifications for 12759-00123: Material: STEEL OVERALL; Supplementary Features: MATERIAL = LOW CARBON STEEL. MILD ZINC COATING WITH COLORLESS CHROMATE CONVERSION COATINGS. PRODUCT WEIGHT = .0378LBS LBS; Surface Treatment: ZINC OVERALL; Hole Diameter: 21.165 MILLIMETERS NOMINAL MM. 10 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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