NSN 5310-00-163-9782 · NIIN 001639782 · Part number 121543
Lockheed Martin Corp Electronics and Missiles Div · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 09205
Government record, cited
NSN 5310-00-163-9782 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-163-9782. Manufacturer of record part number: 121543.
Also searched as5310-00-163-9782 ·
5310001639782 ·
NIIN 001639782 ·
00-163-9782 ·
FSC 5310 Nuts and Washers · CAGE 09205 · 121543 · 121543-1
General Characteristics Item Description: BERYLLIUM COPPER QQ-C-533 TEMPER A OR TEMPER 1/4 HARD,0.250 INCH ID. 0.562 INCH OD. 0.004 INCH THK IN
2 manufacturer part numbers on file
Manufacturer of record: Lockheed Martin Corp Electronics and Missiles Div
Identification
NSN: 5310-00-163-9782
NIIN: 001639782
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 121543
Manufacturer: Lockheed Martin Corp Electronics and Missiles Div
General Description
The Washer.corrugated, cataloged under National Stock Number 5310-00-163-9782, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corp Electronics and Missiles Div. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 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
5310-00-163-9782
Primary Part Number
121543
Item Name
Washer.corrugated
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Lockheed Martin Corp Electronics and Missiles Div
Status
ACTIVE
General Characteristics Item Description
BERYLLIUM COPPER QQ-C-533 TEMPER A OR TEMPER 1/4 HARD,0.250 INCH ID. 0.562 INCH OD. 0.004 INCH THK 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 Items3
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5330-01-479-5970121543-1POSSIBLE MATCH
GASKET
Possible match (shared part number)L3harris Technologies, Inc. Div Space and Airborne Systems
5895-01-544-6996121543-1POSSIBLE MATCH
LIMITER,ELECTRICAL NOISE
Possible match (shared part number)Varo Llc
5365-01-577-2044S-21099POSSIBLE MATCH
SEGMENT,RING SPACER
Possible match (shared part number)Hendrickson Trailer Suspension Systems
Lockheed Martin Corp Electronics and Missiles Div (USA)
Related Parts
5330-01-479-5970POSSIBLE MATCH
GASKET
121543-1
5895-01-544-6996POSSIBLE MATCH
LIMITER,ELECTRICAL NOISE
121543-1
5365-01-577-2044POSSIBLE MATCH
SEGMENT,RING SPACER
S-21099
Frequently Asked Questions
What is NSN 5310-00-163-9782?
NSN 5310-00-163-9782 is a Washer.corrugated, manufactured by Lockheed Martin Corp Electronics and Missiles Div, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-00-163-9782?
NSN 5310-00-163-9782 has 2 manufacturer part numbers on file: 121543-1 (Lockheed Martin Corp Electronics and Missiles Div), 121543 (Lockheed Martin Corp Electronics and Missiles Div).
What NSN replaces 5310-00-163-9782?
3 possible matches (shared part number, not a government interchangeability claim): 5330-01-479-5970, 5895-01-544-6996, 5365-01-577-2044. Verify interchangeability with system specifications before substitution.
What are the specifications of 121543?
Key specifications for 121543: General Characteristics Item Description: BERYLLIUM COPPER QQ-C-533 TEMPER A OR TEMPER 1/4 HARD,0.250 INCH ID. 0.562 INCH OD. 0.004 INCH THK IN. 1 specification is documented in the U.S. Government catalog.
Is NSN 5310-00-163-9782 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.