PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

102531Washer,flat

Massachusetts Institute of Technology · NSN 5310-00-999-0074 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-999-0074 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-999-0074. Primary manufacturer part number: 102531.
Features
  • Washer,flat — FSC 5310
  • Cross-Sectional Shape Style: RECTANGULAR
  • Peripheral Shape Style: ROUND
  • Surface Finish: 32.0 MICROINCHES ALL SURFACES
  • Material: STEEL COMP 416 OVERALL
  • Material Document and Classification: QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Surface Treatment: PASSIVATE OVERALL
  • Hole Diameter: 0.065 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 416 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-999-0074, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Massachusetts Institute of Technology. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-999-0074
Primary Part Number102531
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMassachusetts Institute of Technology
StatusACTIVE
Cross-Sectional Shape StyleRECTANGULAR
Peripheral Shape StyleROUND
Surface Finish32.0 MICROINCHES ALL SURFACES
MaterialSTEEL COMP 416 OVERALL
Material Document and ClassificationQQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Surface TreatmentPASSIVATE OVERALL
Hole Diameter0.065 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Thickness0.018 INCHES MINIMUM AND 0.022 INCHES MAXIMUM IN
Overall Diameter0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5940-00-361-1170 INTERCHANGEABLE
Terminal,quick Disconnect
6515-00-364-0520218-2 INTERCHANGEABLE
Scissors,general Surgical
Acme Precision Surgical Inc Dba a & P Surgical Co
6110-01-299-434910-2531 INTERCHANGEABLE
Panel,power Distribution
L3 Technologies, Inc.
Cross-Reference Index
Part NumberManufacturer
102531 PRIMARY Massachusetts Institute of Technology (USA)
Related Parts
5940-00-361-1170INTERCHANGEABLE
TERMINAL,QUICK DISCONNECT
6515-00-364-0520INTERCHANGEABLE
SCISSORS,GENERAL SURGICAL
218-2
6110-01-299-4349INTERCHANGEABLE
PANEL,POWER DISTRIBUTION
10-2531

Frequently Asked Questions

What is NSN 5310-00-999-0074?

NSN 5310-00-999-0074 is a Washer,flat, manufactured by Massachusetts Institute of Technology, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-999-0074?

NSN 5310-00-999-0074 has 1 cross-referenced part number: 102531 (Massachusetts Institute of Technology).

What NSN replaces 5310-00-999-0074?

There are 3 known substitutes for 5310-00-999-0074: 5940-00-361-1170, 6515-00-364-0520, 6110-01-299-4349. Verify interchangeability with system specifications before substitution.

What are the specifications of 102531?

Key specifications for 102531: Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Surface Finish: 32.0 MICROINCHES ALL SURFACES; Material: STEEL COMP 416 OVERALL. 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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