NSN 5961-01-259-3772 · NIIN 012593772 · Part number 6511257-1
Lockheed Martin Corporation Div Rotary and Mission Systems · FSC 5961 — Semiconductor Devices and Associated Hardware · FSG 59 — Electrical and Electronic Equipment Components · CAGE 03640
Government record, cited
NSN 5961-01-259-3772 — this item is cataloged by the U.S. Government under National Stock Number 5961-01-259-3772. Manufacturer of record part number: 6511257-1.
Also searched as5961-01-259-3772 ·
5961012593772 ·
NIIN 012593772 ·
01-259-3772 ·
FSC 5961 Semiconductor Devices and Associated Hardware · CAGE 03640 · 6511257-1
Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) ALL MOUNTING FACILITIES
Surface Treatment Document and Classification: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE
Unthreaded Mounting Hole Diameter: 0.115 INCHES MAXIMUM ALL MOUNTING FACILITIES IN
Style Designator: RECTANGULAR PRISM
Accommodated Item Securing Device Type: HOLES
Distance Between Mounting Facility Centers: 1.000 INCHES NOMINAL ALL MOUNTING FACILITIES SINGLE CENTER GROUP IN
Surface Treatment: OXIDE FILM
Identification
NSN: 5961-01-259-3772
NIIN: 012593772
FSC: 5961 — Semiconductor Devices and Associated Hardware
FSG: 59 — Electrical and Electronic Equipment Components
Primary part number: 6511257-1
Manufacturer: Lockheed Martin Corporation Div Rotary and Mission Systems
General Description
The Retainer,semiconductor Device, cataloged under National Stock Number 5961-01-259-3772, is classified within Federal Supply Class 5961 (Semiconductor Devices and Associated Hardware) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Lockheed Martin Corporation Div Rotary and Mission Systems. Government technical data includes 8 specifications, 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. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5961-01-259-3772
Primary Part Number
6511257-1
Item Name
Retainer,semiconductor Device
FSC / FSG
5961 / 59 — Semiconductor Devices and Associated Hardware
Manufacturer
Lockheed Martin Corporation Div Rotary and Mission Systems
Status
ACTIVE
Mounting Facility Type and Quantity
2 UNTHREADED HOLE(S) ALL MOUNTING FACILITIES
Surface Treatment Document and Classification
MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE
Unthreaded Mounting Hole Diameter
0.115 INCHES MAXIMUM ALL MOUNTING FACILITIES IN
Style Designator
RECTANGULAR PRISM
Accommodated Item Securing Device Type
HOLES
Distance Between Mounting Facility Centers
1.000 INCHES NOMINAL ALL MOUNTING FACILITIES SINGLE CENTER GROUP IN
Lockheed Martin Corporation Div Rotary and Mission Systems (USA)
No interchangeability data on file.
Other items in FSC 5961 — Semiconductor Devices and Associated Hardware
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5961-00-000-0150
RECTIFIER,SEMICONDUCTOR DEVICE,U
5961-00-000-4541
5961-00-000-4541 · Item name not on file
5961-00-000-5400
5961-00-000-5400 · Item name not on file
5961-00-000-7614
5961-00-000-7614 · Item name not on file
5961-00-000-8760
5961-00-000-8760 · Item name not on file
5961-00-001-1352
5961-00-001-1352 · Item name not on file
5961-00-001-2624
5961-00-001-2624 · Item name not on file
5961-00-001-2978
SEMICONDUCTOR DEVICE,DIODE
Frequently Asked Questions
What is NSN 5961-01-259-3772?
NSN 5961-01-259-3772 is a Retainer,semiconductor Device, manufactured by Lockheed Martin Corporation Div Rotary and Mission Systems, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
What part numbers are listed for NSN 5961-01-259-3772?
NSN 5961-01-259-3772 has 2 manufacturer part numbers on file: 6511257-1 (Endicott Precision, Inc. Dba Endicott Precision Inc), 6511257-1 (Lockheed Martin Corporation Div Rotary and Mission Systems).
What are the specifications of 6511257-1?
Key specifications for 6511257-1: Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) ALL MOUNTING FACILITIES; Overall Height: 0.430 INCHES MAXIMUM0.430 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE; Unthreaded Mounting Hole Diameter: 0.115 INCHES MAXIMUM ALL MOUNTING FACILITIES IN. 8 specifications are documented in the U.S. Government catalog.
Is NSN 5961-01-259-3772 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.