The Lock, cataloged under National Stock Number 4935-00-978-9801, is classified within Federal Supply Class 4935 (Guided Missile Maintenance, Repair, and Checkout Specialized Equipment) of the Maintenance and Repair Shop Equipment group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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.
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3120-01-142-2807880213POSSIBLE MATCH
BEARING,SLEEVE
Possible match (shared part number)American Dryer Corp
6340-01-329-17741002-13POSSIBLE MATCH
ANNUNCIATOR
Possible match (shared part number)Asrc Federal Facilities Logistics, Llc
5905-01-350-657710021-3POSSIBLE MATCH
RESISTOR,FIXED,WIRE WOUND,INDUCT
Possible match (shared part number)Advanced Conversion Technology Inc Div Advanced Conversion Technology
3110-01-361-4624100-21-3POSSIBLE MATCH
PLATE,RETAINING,BEARING
Possible match (shared part number)Cone Drive Operations Inc
4820-01-418-408810021-3POSSIBLE MATCH
VALVE,GLOBE
Possible match (shared part number)Morpac Industries, Inc Div Actuator
5315-01-541-9738100213POSSIBLE MATCH
PIN,STRAIGHT,HEADED
Possible match (shared part number)Finn Corp Dba Finn Corp
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
10021-3
3/9Design control — primary reference
Omex
Related Parts
3120-01-142-2807POSSIBLE MATCH
BEARING,SLEEVE
880213
6340-01-329-1774POSSIBLE MATCH
ANNUNCIATOR
1002-13
5905-01-350-6577POSSIBLE MATCH
RESISTOR,FIXED,WIRE WOUND,INDUCT
10021-3
3110-01-361-4624POSSIBLE MATCH
PLATE,RETAINING,BEARING
100-21-3
4820-01-418-4088POSSIBLE MATCH
VALVE,GLOBE
10021-3
5315-01-541-9738POSSIBLE MATCH
PIN,STRAIGHT,HEADED
100213
Frequently Asked Questions
What is NSN 4935-00-978-9801?
NSN 4935-00-978-9801 is a Lock, classified under FSC 4935, Guided Missile Maintenance, Repair, and Checkout Specialized Equipment. Status: active.
What NSN replaces 4935-00-978-9801?
6 possible matches (shared part number, not a government interchangeability claim): 3120-01-142-2807, 6340-01-329-1774, 5905-01-350-6577. Verify interchangeability with system specifications before substitution.
Is NSN 4935-00-978-9801 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.
What is the DEMIL code for NSN 4935-00-978-9801?
NSN 4935-00-978-9801 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.