PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

555-29Washer,flat

Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc · NSN 5310-00-372-8854 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-372-8854 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-372-8854. Primary manufacturer part number: 555-29.
Features
  • Washer,flat — FSC 5310
  • Cross-Sectional Shape Style: RECTANGULAR
  • Thickness: 0.014 INCHES MINIMUM AND 0.016 INCHES MAXIMUM IN
  • Overall Diameter: 0.440 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN
  • Peripheral Shape Style: ROUND
  • Center Hole Shape Style: ROUND
  • Material: STEEL COMP 304 OVERALL
  • Hole Diameter: 0.255 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 304 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-372-8854, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc. Government technical data includes 9 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: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-372-8854
Primary Part Number555-29
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMas Components & Coatings, Llc Dba Mas Components & Coatings Llc
StatusCANCELLED
Cross-Sectional Shape StyleRECTANGULAR
Thickness0.014 INCHES MINIMUM AND 0.016 INCHES MAXIMUM IN
Overall Diameter0.440 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN
Peripheral Shape StyleROUND
Center Hole Shape StyleROUND
MaterialSTEEL COMP 304 OVERALL
Hole Diameter0.255 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
Surface TreatmentPASSIVATE OVERALL
Material Document and ClassificationMIL-S-4043 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
4810-01-038-2370251196 INTERCHANGEABLE
Valve,solenoid
Parker-Hannifin Corporation Dba Refrigeration Specialties Div Refrigerating Specialties Division
Cross-Reference Index
Part NumberManufacturer
555-29 PRIMARY Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc (USA)
555-29 Alliant Defense Electronics Systems Inc Dba Lundy Technical Center (USA)
555-29 Kilgore Flares Company Llc (USA)
Related Parts
4810-01-038-2370INTERCHANGEABLE
VALVE,SOLENOID
251196

Frequently Asked Questions

What is NSN 5310-00-372-8854?

NSN 5310-00-372-8854 is a Washer,flat, manufactured by Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-372-8854?

NSN 5310-00-372-8854 has 3 cross-referenced part numbers: 555-29 (Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc), 555-29 (Alliant Defense Electronics Systems Inc Dba Lundy Technical Center), 555-29 (Kilgore Flares Company Llc).

What NSN replaces 5310-00-372-8854?

There is 1 known substitute for 5310-00-372-8854: 4810-01-038-2370. Verify interchangeability with system specifications before substitution.

What are the specifications of 555-29?

Key specifications for 555-29: Cross-Sectional Shape Style: RECTANGULAR; Thickness: 0.014 INCHES MINIMUM AND 0.016 INCHES MAXIMUM IN; Overall Diameter: 0.440 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN; Peripheral Shape Style: ROUND. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-372-8854 still in active supply?

NSN 5310-00-372-8854 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com