PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B21491Hinge,butt

American National Standards Institute Incorporated Dba American National Standards Institute · NSN 5340-00-229-4372 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-229-4372 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-229-4372. Primary manufacturer part number: B21491.
Features
  • Hinge,butt — FSC 5340
  • Mounting Hole Quantity: 68
  • Performance Type: REGULAR DUTY
  • Knuckle Quantity: 144
  • Material Thickness: 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
  • Pin Diameter: 0.093 INCHES NOMINAL IN
  • Pin Center to Body Edge Distance: 0.750 INCHES NOMINAL IN
  • Reversible Feature: NOT INCLUDED
Applications
  • Applications requiring Unable to Decode construction
General Description

The Hinge,butt, cataloged under National Stock Number 5340-00-229-4372, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is American National Standards Institute Incorporated Dba American National Standards Institute. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-229-4372
Primary Part NumberB21491
Item NameHinge,butt
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerAmerican National Standards Institute Incorporated Dba American National Standards Institute
StatusACTIVE
Mounting Hole Quantity68
Performance TypeREGULAR DUTY
Knuckle Quantity144
Material Thickness0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
Pin Diameter0.093 INCHES NOMINAL IN
Pin Center to Body Edge Distance0.750 INCHES NOMINAL IN
Reversible FeatureNOT INCLUDED
Mounting Hole Diameter0.116 INCHES NOMINAL IN
Hinge Mounting TypeFULL SURFACE
Style DesignatorBUTT
MaterialUNABLE TO DECODE
Surface TreatmentUNABLE TO DECODE
Nondefinitive Spec/std Data2174 TYPE
Surface Treatment Document and ClassificationUNABLE TO DECODE
Pin RemovabilityNONREMOVABLE
Knuckle TypeFRICTION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
Hinge,tee
5340-00-224-7948BHMA-A156.1 A8133 3-1/2IN SUCCESSOR
Hinge,butt
Builders Hardware Mfrs Assn Inc
5340-00-229-4361BHMA-A156.1 A2112 4-1/2IN SUCCESSOR
Hinge,butt
Builders Hardware Mfrs Assn Inc
5340-00-240-2579ANSI/ BHMA A156.20- A81221 SUCCESSOR
Hinge,strap
Builders Hardware Mfrs Assn Inc
Hinge,strap
5340-00-240-2583BHMA-A156.20 A81222 3IN SUCCESSOR
Hinge,strap
Builders Hardware Mfrs Assn Inc
5340-00-243-6191BHMA-A156.1 A8133 6X6 IN SUCCESSOR
Hinge,butt
Builders Hardware Mfrs Assn Inc
Hinge,butt
Hinge,butt
Hinge,butt
Cross-Reference Index
Part NumberManufacturer
B21491 PRIMARY American National Standards Institute Incorporated Dba American National Standards Institute (USA)
FFH116 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
311 1-4 Stanley Tools Div of Stanley Works (USA)
Related Parts
5340-00-240-2592SUCCESSOR
HINGE,TEE
5340-00-224-7948SUCCESSOR
HINGE,BUTT
BHMA-A156.1 A8133 3-1/2IN
5340-00-229-4361SUCCESSOR
HINGE,BUTT
BHMA-A156.1 A2112 4-1/2IN
5340-00-240-2579SUCCESSOR
HINGE,STRAP
ANSI/ BHMA A156.20- A81221
5340-00-240-2582SUCCESSOR
HINGE,STRAP
5340-00-240-2583SUCCESSOR
HINGE,STRAP
BHMA-A156.20 A81222 3IN
5340-00-243-6191SUCCESSOR
HINGE,BUTT
BHMA-A156.1 A8133 6X6 IN
5340-00-243-6193SUCCESSOR
HINGE,BUTT
5340-00-252-3326SUCCESSOR
HINGE,BUTT
5340-00-598-6371SUCCESSOR
HINGE,BUTT
5340-00-664-1310SUCCESSOR
HINGE,STRAP
5340-00-664-1311SUCCESSOR
HINGE,STRAP

Frequently Asked Questions

What is NSN 5340-00-229-4372?

NSN 5340-00-229-4372 is a Hinge,butt, manufactured by American National Standards Institute Incorporated Dba American National Standards Institute, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-00-229-4372?

NSN 5340-00-229-4372 has 3 cross-referenced part numbers: B21491 (American National Standards Institute Incorporated Dba American National Standards Institute), FFH116 (Federal Specifications Promulgated by General Services Administration Washington DC), 311 1-4 (Stanley Tools Div of Stanley Works).

What NSN replaces 5340-00-229-4372?

There are 12 known substitutes for 5340-00-229-4372: 5340-00-240-2592, 5340-00-224-7948, 5340-00-229-4361 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B21491?

Key specifications for B21491: Mounting Hole Quantity: 68; Performance Type: REGULAR DUTY; Knuckle Quantity: 144; Material Thickness: 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN. 17 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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