NSN 5310-00-033-4642 · NIIN 000334642 · Part number 21743
Kidde Technologies, Inc Div Kidde Aerospace and Defense · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 61423
Government record, cited
NSN 5310-00-033-4642 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-033-4642. Manufacturer of record part number: 21743.
Also searched as5310-00-033-4642 ·
5310000334642 ·
NIIN 000334642 ·
00-033-4642 ·
FSC 5310 Nuts and Washers · CAGE 61423 · 21743
Manufacturer: Kidde Technologies, Inc Div Kidde Aerospace and Defense
General Description
The Washer,flat, cataloged under National Stock Number 5310-00-033-4642, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Kidde Technologies, Inc Div Kidde Aerospace and Defense. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5310-00-033-4642
Primary Part Number
21743
Item Name
Washer,flat
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Kidde Technologies, Inc Div Kidde Aerospace and Defense
Status
ACTIVE
Overall Diameter
1.125 INCHES NOMINAL IN
Cross-Sectional Shape Style
RECTANGULAR
Peripheral Shape Style
ROUND
Material
STEEL CORROSION RESISTING OVERALL
Center Hole Shape Style
ROUND
Hole Diameter
0.568 INCHES NOMINAL IN
Thickness
0.032 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5905-00-165-3107POSSIBLE MATCH
RESISTOR,FIXED,FILM
Possible match (shared part number)
5342-00-236-293721743POSSIBLE MATCH
BRACKET,IGNITION CO
Possible match (shared part number)Mitsubishi Caterpillar Forklift America, Inc
5360-00-247-403521743POSSIBLE MATCH
SPRING,HELICAL,COMPRESSION
Possible match (shared part number)Eaton Aerospace Llc
5360-00-316-5348POSSIBLE MATCH
SPRING,HELICAL,COMPRESSION
Possible match (shared part number)
5307-01-007-770421743POSSIBLE MATCH
STUD,SHOULDERED
Possible match (shared part number)Mason Electric Co. Dba Mason Controls
6680-01-698-4850217-43POSSIBLE MATCH
TAPE,DISPLAY
Possible match (shared part number)Motson Graphics Inc Dba Gentape Div Gentape
Kidde Technologies, Inc Div Kidde Aerospace and Defense (USA)
Reference documents
Reference
Meaning
21743
5/9Secondary reference
Kidde-Fenwal, Llc
Related Parts
5905-00-165-3107POSSIBLE MATCH
RESISTOR,FIXED,FILM
5342-00-236-2937POSSIBLE MATCH
BRACKET,IGNITION CO
21743
5360-00-247-4035POSSIBLE MATCH
SPRING,HELICAL,COMPRESSION
21743
5360-00-316-5348POSSIBLE MATCH
SPRING,HELICAL,COMPRESSION
5307-01-007-7704POSSIBLE MATCH
STUD,SHOULDERED
21743
6680-01-698-4850POSSIBLE MATCH
TAPE,DISPLAY
217-43
Frequently Asked Questions
What is NSN 5310-00-033-4642?
NSN 5310-00-033-4642 is a Washer,flat, manufactured by Kidde Technologies, Inc Div Kidde Aerospace and Defense, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-00-033-4642?
NSN 5310-00-033-4642 has 1 manufacturer part number on file: 21743 (Kidde Technologies, Inc Div Kidde Aerospace and Defense).
What NSN replaces 5310-00-033-4642?
6 possible matches (shared part number, not a government interchangeability claim): 5905-00-165-3107, 5342-00-236-2937, 5360-00-247-4035. Verify interchangeability with system specifications before substitution.
What are the specifications of 21743?
Key specifications for 21743: Overall Diameter: 1.125 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: STEEL CORROSION RESISTING OVERALL. 7 specifications are documented in the U.S. Government catalog.
Is NSN 5310-00-033-4642 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.