PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21327Adapter Rail,weapon Mounted

Charles Reed Knight Jr Dba Knight's Armament Company · NSN 1010-01-533-9410 · FSC 1010 · No Item Name Available
Verified by PartsTable
NSN 1010-01-533-9410 — this item is cataloged by the U.S. Government under National Stock Number 1010-01-533-9410. Primary manufacturer part number: 21327.
Features
  • Adapter Rail,weapon Mounted — FSC 1010
  • 1 verified cross-reference
  • Primary manufacturer: Charles Reed Knight Jr Dba Knight's Armament Company
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Adapter Rail,weapon Mounted, cataloged under National Stock Number 1010-01-533-9410, is classified within Federal Supply Class 1010 (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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1010-01-533-9410
Primary Part Number21327
Item NameAdapter Rail,weapon Mounted
FSC / FSG1010 / 10 — No Item Name Available
ManufacturerCharles Reed Knight Jr Dba Knight's Armament Company
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5999-00-035-793421-327 INTERCHANGEABLE
Contact,electrical
Eaton Corp Opns & Technical Center
9540-00-288-1145 INTERCHANGEABLE
Angle,structural
5950-01-318-115513-327 INTERCHANGEABLE
Transformer,power Autotransforme
Te Connectivity Corporation
4820-01-418-889621327-003 INTERCHANGEABLE
Valve,linear,directional Control
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Cross-Reference Index
Part NumberManufacturer
21327 PRIMARY Charles Reed Knight Jr Dba Knight's Armament Company (USA)
Related Parts
5999-00-035-7934INTERCHANGEABLE
CONTACT,ELECTRICAL
21-327
9540-00-288-1145INTERCHANGEABLE
ANGLE,STRUCTURAL
5950-01-318-1155INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
13-327
4820-01-418-8896INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
21327-003

Frequently Asked Questions

What is NSN 1010-01-533-9410?

NSN 1010-01-533-9410 is a Adapter Rail,weapon Mounted, manufactured by Charles Reed Knight Jr Dba Knight's Armament Company, classified under FSC 1010 (No Item Name Available). Status: active.

What are the part numbers for NSN 1010-01-533-9410?

NSN 1010-01-533-9410 has 1 cross-referenced part number: 21327 (Charles Reed Knight Jr Dba Knight's Armament Company).

What NSN replaces 1010-01-533-9410?

There are 4 known substitutes for 1010-01-533-9410: 5999-00-035-7934, 9540-00-288-1145, 5950-01-318-1155 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21327?

Key specifications for 21327: End Item Identification: M203 40MM MM; Part Name Assigned by Controlling Agency: RAIL CLAMP. 2 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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