PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-B-920Bar,bucking,rivet

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5120-00-240-2530 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-240-2530 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-240-2530. Primary manufacturer part number: MIL-B-920.
Features
  • Bar,bucking,rivet — FSC 5120
  • Stock Diameter: 2.000 INCHES NOMINAL IN
  • Tool Style Designator: BB1
  • Nondefinitive Spec/std Data: VII TYPE AND 3 SIZE
  • Recess Diameter: 0.625 INCHES NOMINAL IN
  • 4 verified cross-references
  • Primary manufacturer: Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • Field maintenance and repair
  • Facility maintenance operations
  • General-purpose hand tools
General Description

The Bar,bucking,rivet, cataloged under National Stock Number 5120-00-240-2530, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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.

Technical Specifications
ParameterValue
NSN5120-00-240-2530
Primary Part NumberMIL-B-920
Item NameBar,bucking,rivet
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Stock Diameter2.000 INCHES NOMINAL IN
Tool Style DesignatorBB1
Nondefinitive Spec/std DataVII TYPE AND 3 SIZE
Recess Diameter0.625 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5120-00-177-7050 INTERCHANGEABLE
Bar,bucking,rivet
5120-00-240-2532 INTERCHANGEABLE
Bar,bucking,rivet
5120-00-242-9203 INTERCHANGEABLE
Bar,bucking,rivet
5120-00-293-2501 INTERCHANGEABLE
Bar,bucking,rivet
5120-00-293-2502 INTERCHANGEABLE
Bar,bucking,rivet
5120-00-293-25035120-00-293-2503 INTERCHANGEABLE
Bar,bucking,rivet
U.s. Industrial Tool and Supply Company Dba Usit Co
5120-00-432-9142 INTERCHANGEABLE
Bar,bucking,rivet
5120-00-432-9143 INTERCHANGEABLE
Bar,bucking,rivet
5120-00-497-3347 INTERCHANGEABLE
Bar,bucking,rivet
5120-00-541-5594 INTERCHANGEABLE
Bar,bucking,rivet
Cross-Reference Index
Part NumberManufacturer
MIL-B-920 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
AA52123-VII General Services Administration Federal Supply Service (USA)
MIL-B-920 TY7SZ3 General Services Administration Federal Supply Service (USA)
A-A-52123 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
Related Parts
5120-00-177-7050INTERCHANGEABLE
BAR,BUCKING,RIVET
5120-00-240-2532INTERCHANGEABLE
BAR,BUCKING,RIVET
5120-00-242-9203INTERCHANGEABLE
BAR,BUCKING,RIVET
5120-00-293-2501INTERCHANGEABLE
BAR,BUCKING,RIVET
5120-00-293-2502INTERCHANGEABLE
BAR,BUCKING,RIVET
5120-00-293-2503INTERCHANGEABLE
BAR,BUCKING,RIVET
5120-00-293-2503
5120-00-432-9142INTERCHANGEABLE
BAR,BUCKING,RIVET
5120-00-432-9143INTERCHANGEABLE
BAR,BUCKING,RIVET
5120-00-497-3347INTERCHANGEABLE
BAR,BUCKING,RIVET
5120-00-541-5594INTERCHANGEABLE
BAR,BUCKING,RIVET
5120-00-596-4063INTERCHANGEABLE
BAR,BUCKING,RIVET
A1557-1
5120-01-051-9384INTERCHANGEABLE
BAR,BUCKING,RIVET

Frequently Asked Questions

What is NSN 5120-00-240-2530?

NSN 5120-00-240-2530 is a Bar,bucking,rivet, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-00-240-2530?

NSN 5120-00-240-2530 has 4 cross-referenced part numbers: MIL-B-920 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), AA52123-VII (General Services Administration Federal Supply Service), MIL-B-920 TY7SZ3 (General Services Administration Federal Supply Service), A-A-52123 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC).

What NSN replaces 5120-00-240-2530?

There are 12 known substitutes for 5120-00-240-2530: 5120-00-177-7050, 5120-00-240-2532, 5120-00-242-9203 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-B-920?

Key specifications for MIL-B-920: Stock Diameter: 2.000 INCHES NOMINAL IN; Tool Style Designator: BB1; Nondefinitive Spec/std Data: VII TYPE AND 3 SIZE; Recess Diameter: 0.625 INCHES NOMINAL IN. 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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