PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12581Carrier,bolt

Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc · NSN 1005-01-645-3424 · FSC 1005 · No Item Name Available
Verified by PartsTable
NSN 1005-01-645-3424 — this item is cataloged by the U.S. Government under National Stock Number 1005-01-645-3424. Primary manufacturer part number: 12581.
Features
  • Carrier,bolt — FSC 1005
  • Material: STEEL COMP 4140
  • 1 verified cross-reference
  • Primary manufacturer: Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 4140 construction
General Description

The Carrier,bolt, cataloged under National Stock Number 1005-01-645-3424, is classified within Federal Supply Class 1005 (No Item Name Available) of the Weapons group. The primary manufacturer of record is Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1005-01-645-3424
Primary Part Number12581
Item NameCarrier,bolt
FSC / FSG1005 / 10 — No Item Name Available
ManufacturerBarrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc
StatusACTIVE
MaterialSTEEL COMP 4140
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
1560-00-122-922512581 INTERCHANGEABLE
Fitting,spar Jury S
Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company
6515-00-137-63456345 INTERCHANGEABLE
Plug,ear
Access: Supports for Living Inc. Dba Access Supports for Living Inc
5133-00-227-5988 INTERCHANGEABLE
Drill,twist
6615-00-508-302015713-1A1 INTERCHANGEABLE
Controller,flight,automatic Pilo
Honeywell Intl Inc Defense Avionics Systems
6220-00-758-818312581 INTERCHANGEABLE
Base Reflector,light
Grimes Aerospace Company
5970-00-840-27711258-1 INTERCHANGEABLE
Insulation Sleeving,electrical
Systems Protection Group Us Llc
5330-01-013-757812581 INTERCHANGEABLE
Seal,plain Encased
Dana Commercial Vehicle Products, Llc
3455-01-330-075012581 INTERCHANGEABLE
Cutter,milling,angle
Niagara Cutter Inc
1377-01-346-22151258-1 INTERCHANGEABLE
Initiator,cartridge Actuated
Rockwell Collins Inc
4330-01-369-866312581 INTERCHANGEABLE
Filter Element,fluid
Gelman Sciences Inc
Cross-Reference Index
Part NumberManufacturer
12581 PRIMARY Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc (USA)
Related Parts
1560-00-122-9225INTERCHANGEABLE
FITTING,SPAR JURY S
12581
6515-00-137-6345INTERCHANGEABLE
PLUG,EAR
6345
5133-00-227-5988INTERCHANGEABLE
DRILL,TWIST
6615-00-508-3020INTERCHANGEABLE
CONTROLLER,FLIGHT,AUTOMATIC PILO
15713-1A1
6220-00-758-8183INTERCHANGEABLE
BASE REFLECTOR,LIGHT
12581
5970-00-840-2771INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
1258-1
5330-01-013-7578INTERCHANGEABLE
SEAL,PLAIN ENCASED
12581
3455-01-330-0750INTERCHANGEABLE
CUTTER,MILLING,ANGLE
12581
1377-01-346-2215INTERCHANGEABLE
INITIATOR,CARTRIDGE ACTUATED
1258-1
4330-01-369-8663INTERCHANGEABLE
FILTER ELEMENT,FLUID
12581

Frequently Asked Questions

What is NSN 1005-01-645-3424?

NSN 1005-01-645-3424 is a Carrier,bolt, manufactured by Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc, classified under FSC 1005 (No Item Name Available). Status: active.

What are the part numbers for NSN 1005-01-645-3424?

NSN 1005-01-645-3424 has 1 cross-referenced part number: 12581 (Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc).

What NSN replaces 1005-01-645-3424?

There are 10 known substitutes for 1005-01-645-3424: 1560-00-122-9225, 6515-00-137-6345, 5133-00-227-5988 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12581?

Key specifications for 12581: End Item Identification: M-95SP MK II; Overall Length: 76.85 MILLIMETERS NOMINAL MM; Part Name Assigned by Controlling Agency: BOLT CARRIER; Material: STEEL COMP 4140. 4 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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