PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3681Washer,flat

Kidde Technologies, Inc Div Kidde Aerospace and Defense · NSN 5310-00-166-5882 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-166-5882 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-166-5882. Primary manufacturer part number: 3681.
Features
  • Washer,flat — FSC 5310
  • Cross-Sectional Shape Style: RECTANGULAR
  • Hole Diameter: 0.309 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN
  • Material: PLASTIC OVERALL
  • Overall Diameter: 0.542 INCHES MINIMUM AND 0.548 INCHES MAXIMUM IN
  • Center Hole Shape Style: ROUND
  • Thickness: 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
  • Peripheral Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Plastic Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-166-5882, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Kidde Technologies, Inc Div Kidde Aerospace and Defense. Government technical data includes 7 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-166-5882
Primary Part Number3681
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerKidde Technologies, Inc Div Kidde Aerospace and Defense
StatusACTIVE
Cross-Sectional Shape StyleRECTANGULAR
Hole Diameter0.309 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN
MaterialPLASTIC OVERALL
Overall Diameter0.542 INCHES MINIMUM AND 0.548 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Thickness0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
Peripheral Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
3110-00-100-067514398P11 INTERCHANGEABLE
Cone and Rollers,tapered Roller
Taylor Machine Works Inc
5120-00-406-31815120-00-406-3181 INTERCHANGEABLE
Bit,screwdriver
General Services Administration Federal Supply Service
3120-00-585-4228HASB5 INTERCHANGEABLE
Bearing,plain,self-Aligning
U S Bearings
5355-00-701-2862368-1 INTERCHANGEABLE
Knob
Yosemite Investment Inc Dba North American Capacitor Co
6685-01-047-13813681 INTERCHANGEABLE
Indicator,humidity,plug
Clariant Corp Div Clariant Corporation
3020-01-666-09023681 INTERCHANGEABLE
Guard,mechanical Drive
Buffalo Turbine Defense Llc
5310-01-667-3730 INTERCHANGEABLE
Push on Nut
Cross-Reference Index
Part NumberManufacturer
P1054 Swedlow Inc Liberty Mirror Div (USA)
3681 Kidde-Fenwal, Llc (USA)
3681 PRIMARY Kidde Technologies, Inc Div Kidde Aerospace and Defense (USA)
Related Parts
3110-00-100-0675INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
14398P11
5120-00-406-3181INTERCHANGEABLE
BIT,SCREWDRIVER
5120-00-406-3181
3120-00-585-4228INTERCHANGEABLE
BEARING,PLAIN,SELF-ALIGNING
HASB5
5355-00-701-2862INTERCHANGEABLE
KNOB
368-1
6685-01-047-1381INTERCHANGEABLE
INDICATOR,HUMIDITY,PLUG
3681
3020-01-666-0902INTERCHANGEABLE
GUARD,MECHANICAL DRIVE
3681
5310-01-667-3730INTERCHANGEABLE
PUSH ON NUT

Frequently Asked Questions

What is NSN 5310-00-166-5882?

NSN 5310-00-166-5882 is a Washer,flat, manufactured by Kidde Technologies, Inc Div Kidde Aerospace and Defense, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-166-5882?

NSN 5310-00-166-5882 has 3 cross-referenced part numbers: P1054 (Swedlow Inc Liberty Mirror Div), 3681 (Kidde-Fenwal, Llc), 3681 (Kidde Technologies, Inc Div Kidde Aerospace and Defense).

What NSN replaces 5310-00-166-5882?

There are 7 known substitutes for 5310-00-166-5882: 3110-00-100-0675, 5120-00-406-3181, 3120-00-585-4228 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3681?

Key specifications for 3681: Cross-Sectional Shape Style: RECTANGULAR; Hole Diameter: 0.309 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN; Material: PLASTIC OVERALL; Overall Diameter: 0.542 INCHES MINIMUM AND 0.548 INCHES MAXIMUM 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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