PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20051Bolt Assembly,rifle

Charles Reed Knight Jr Dba Knight's Armament Company · NSN 1005-01-502-9977 · FSC 1005 · No Item Name Available
Verified by PartsTable
NSN 1005-01-502-9977 — this item is cataloged by the U.S. Government under National Stock Number 1005-01-502-9977. Primary manufacturer part number: 20051.
Features
  • Bolt Assembly,rifle — FSC 1005
  • 1 verified cross-reference
  • Primary manufacturer: Charles Reed Knight Jr Dba Knight's Armament Company
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Bolt Assembly,rifle, cataloged under National Stock Number 1005-01-502-9977, is classified within Federal Supply Class 1005 (No Item Name Available) of the Weapons group. The primary manufacturer of record is Charles Reed Knight Jr Dba Knight's Armament Company. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1005-01-502-9977
Primary Part Number20051
Item NameBolt Assembly,rifle
FSC / FSG1005 / 10 — No Item Name Available
ManufacturerCharles Reed Knight Jr Dba Knight's Armament Company
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5133-00-228-1338 INTERCHANGEABLE
Drill,twist
4730-00-274-966720051 INTERCHANGEABLE
Packing Nut
Northrop Grumman Systems Corporation Div Marine Systems
3110-00-293-9163 INTERCHANGEABLE
Bearing,ball,annular
6625-00-580-368420051 INTERCHANGEABLE
Voltmeter
Fairbanks Morse, Llc
3040-01-091-384170400-02252-120 INTERCHANGEABLE
Connecting Link,rigid
Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
5915-01-155-705520Q51 INTERCHANGEABLE
Filter,band Pass
Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled
3510-01-162-4472 INTERCHANGEABLE
Yoke and Sleeve
5331-01-180-2414 INTERCHANGEABLE
O-Ring
2510-01-258-3822SP2005 INTERCHANGEABLE
Shock Absorber,direct Action
Itt Enidine Inc. Dba Itt Enidine Inc
5950-01-305-40911836C INTERCHANGEABLE
Coil,electrical
The Arnold Engineering Co
Cross-Reference Index
Part NumberManufacturer
20051 PRIMARY Charles Reed Knight Jr Dba Knight's Armament Company (USA)
Related Parts
5133-00-228-1338INTERCHANGEABLE
DRILL,TWIST
4730-00-274-9667INTERCHANGEABLE
PACKING NUT
20051
3110-00-293-9163INTERCHANGEABLE
BEARING,BALL,ANNULAR
6625-00-580-3684INTERCHANGEABLE
VOLTMETER
20051
3040-01-091-3841INTERCHANGEABLE
CONNECTING LINK,RIGID
70400-02252-120
5915-01-155-7055INTERCHANGEABLE
FILTER,BAND PASS
20Q51
3510-01-162-4472INTERCHANGEABLE
YOKE AND SLEEVE
5331-01-180-2414INTERCHANGEABLE
O-RING
2510-01-258-3822INTERCHANGEABLE
SHOCK ABSORBER,DIRECT ACTION
SP2005
5950-01-305-4091INTERCHANGEABLE
COIL,ELECTRICAL
1836C
3920-01-465-2478INTERCHANGEABLE
CART,GENERAL HAULING
5930-01-647-4798INTERCHANGEABLE
SWITCH,PUSH
194-26

Frequently Asked Questions

What is NSN 1005-01-502-9977?

NSN 1005-01-502-9977 is a Bolt Assembly,rifle, manufactured by Charles Reed Knight Jr Dba Knight's Armament Company, classified under FSC 1005 (No Item Name Available). Status: active.

What are the part numbers for NSN 1005-01-502-9977?

NSN 1005-01-502-9977 has 1 cross-referenced part number: 20051 (Charles Reed Knight Jr Dba Knight's Armament Company).

What NSN replaces 1005-01-502-9977?

There are 12 known substitutes for 1005-01-502-9977: 5133-00-228-1338, 4730-00-274-9667, 3110-00-293-9163 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20051?

Key specifications for 20051: End Item Identification: MARK 11, MOD 0, SNIPER WEAPON SYSTEM. 1 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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