FSC Application Data: ACFT GUNNERY FIRE CONTROL COMPONENT
General Characteristics Item Description: 0.872 IN. MINIMUM DIA.,0.874 IN. MAXIMUM DIA.,0.428 IN. MINIMUM L,0.432 IN. MAXIMUM L; MATT ALUMINUM ALLOY ROD 2024-T4,QQ-A-268 TEMPER T4 IN
Identification
NSN: 1270-00-026-4176
NIIN: 000264176
FSC: 1270 — Aircraft Gunnery Fire Control Components
FSG: 12 — Fire Control Equipment
General Description
The Shield,bearing,off-, cataloged under National Stock Number 1270-00-026-4176, is classified within Federal Supply Class 1270 (Aircraft Gunnery Fire Control Components) of the Fire Control Equipment group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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
1270-00-026-4176
Item Name
Shield,bearing,off-
FSC / FSG
1270 / 12 — Aircraft Gunnery Fire Control Components
Status
ACTIVE
FSC Application Data
ACFT GUNNERY FIRE CONTROL COMPONENT
General Characteristics Item Description
0.872 IN. MINIMUM DIA.,0.874 IN. MAXIMUM DIA.,0.428 IN. MINIMUM L,0.432 IN. MAXIMUM L; MATT ALUMINUM ALLOY ROD 2024-T4,QQ-A-268 TEMPER T4 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 Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5998-00-444-4311402644POSSIBLE MATCH
CIRCUIT CARD ASSEMBLY
Possible match (shared part number)Astronics Test Systems Inc
5905-01-125-1751402644POSSIBLE MATCH
RESISTOR NETWORK,FIXED,FILM
Possible match (shared part number)Fluke Corp
5315-01-296-8574POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
Possible match (shared part number)
4820-01-362-3506402644POSSIBLE MATCH
VALVE,CHECK
Possible match (shared part number)Vickers & Associates, Inc.
4820-01-432-4667402644POSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)Eaton Aerospace, Llc Dba Jackson South
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
402644
3/2Design control — primary reference
U.S. Government activity
Related Parts
5998-00-444-4311POSSIBLE MATCH
CIRCUIT CARD ASSEMBLY
402644
5905-01-125-1751POSSIBLE MATCH
RESISTOR NETWORK,FIXED,FILM
402644
5315-01-296-8574POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
4820-01-362-3506POSSIBLE MATCH
VALVE,CHECK
402644
4820-01-432-4667POSSIBLE MATCH
DISK,VALVE
402644
Frequently Asked Questions
What is NSN 1270-00-026-4176?
NSN 1270-00-026-4176 is a Shield,bearing,off-, classified under FSC 1270, Aircraft Gunnery Fire Control Components. Status: active.
What NSN replaces 1270-00-026-4176?
5 possible matches (shared part number, not a government interchangeability claim): 5998-00-444-4311, 5905-01-125-1751, 5315-01-296-8574. Verify interchangeability with system specifications before substitution.
What are the specifications of 1270-00-026-4176?
Key specifications for 1270-00-026-4176: FSC Application Data: ACFT GUNNERY FIRE CONTROL COMPONENT; General Characteristics Item Description: 0.872 IN. MINIMUM DIA.,0.874 IN. MAXIMUM DIA.,0.428 IN. MINIMUM L,0.432 IN. MAXIMUM L; MATT ALUMINUM ALLOY ROD 2024-T4,QQ-A-268 TEMPER T4 IN. 2 specifications are documented in the U.S. Government catalog.
Is NSN 1270-00-026-4176 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.