PartsTable TECHNICAL DATA SHEET
AUGUST 2026Technical Data Sheet

A-A-51129Mandrel,expansion

Sisters J&j, Inc · NSN 3460-00-274-7380 · FSC 3460 · No Item Name Available
Verified by PartsTable
NSN 3460-00-274-7380 — this item is cataloged by the U.S. Government under National Stock Number 3460-00-274-7380. Primary manufacturer part number: A-A-51129.
Features
  • Mandrel,expansion — FSC 3460
  • Departure From Cited Designator: EXCEPT FOR SIZE DESIGNATOR
  • Expansion Range: +0.500 TO 1.000 INCHES IN
  • Size Designator: 1
  • Auxiliary Center: NOT INCLUDED
  • Work Holding Facility Length: 0.500 INCHES NOMINAL AND 1.000 INCHES NOMINAL AND 1.500 INCHES NOMINAL IN
  • Work Holding Facility: JAW
  • Work Holding Facility Quantity: 1 SET
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Mandrel,expansion, cataloged under National Stock Number 3460-00-274-7380, is classified within Federal Supply Class 3460 (No Item Name Available) of the Metalworking Machinery (continued) group. The primary manufacturer of record is Sisters J&j, Inc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 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
NSN3460-00-274-7380
Primary Part NumberA-A-51129
Item NameMandrel,expansion
FSC / FSG3460 / 34 — No Item Name Available
ManufacturerSisters J&j, Inc
StatusACTIVE
Departure From Cited DesignatorEXCEPT FOR SIZE DESIGNATOR
Expansion Range+0.500 TO 1.000 INCHES IN
Size Designator1
Auxiliary CenterNOT INCLUDED
Work Holding Facility Length0.500 INCHES NOMINAL AND 1.000 INCHES NOMINAL AND 1.500 INCHES NOMINAL IN
Work Holding FacilityJAW
Work Holding Facility Quantity1 SET
Design TypeSTEP JAW
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3460-00-224-8978M2 INTERCHANGEABLE
Mandrel,expansion
K.o. Lee Company
3460-00-224-8985 INTERCHANGEABLE
Mandrel,expansion
3460-00-224-8989 INTERCHANGEABLE
Mandrel,expansion
3460-00-254-3032 INTERCHANGEABLE
Mandrel,machine,solid
3460-00-254-3034 INTERCHANGEABLE
Mandrel,machine,solid
3460-00-254-3050 INTERCHANGEABLE
Mandrel,machine,solid
3460-00-254-3056 INTERCHANGEABLE
Mandrel,machine,solid
3460-00-254-3076 INTERCHANGEABLE
Mandrel,machine,solid
3460-00-254-3080 INTERCHANGEABLE
Mandrel,machine,solid
3460-00-254-3088 INTERCHANGEABLE
Mandrel,machine,solid
Cross-Reference Index
Part NumberManufacturer
A-A-51129 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
OO-M-251 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
A-A-51129A TY III, SIZE 1 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
A-A-51129 PRIMARY Sisters J&j, Inc (USA)
MM2 Dunham Tool Co Inc (USA)
A-A-51129 TY 2 SIZE 1 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
Related Parts
3460-00-224-8978INTERCHANGEABLE
MANDREL,EXPANSION
M2
3460-00-224-8985INTERCHANGEABLE
MANDREL,EXPANSION
3460-00-224-8989INTERCHANGEABLE
MANDREL,EXPANSION
3460-00-254-3032INTERCHANGEABLE
MANDREL,MACHINE,SOLID
3460-00-254-3034INTERCHANGEABLE
MANDREL,MACHINE,SOLID
3460-00-254-3050INTERCHANGEABLE
MANDREL,MACHINE,SOLID
3460-00-254-3056INTERCHANGEABLE
MANDREL,MACHINE,SOLID
3460-00-254-3076INTERCHANGEABLE
MANDREL,MACHINE,SOLID
3460-00-254-3080INTERCHANGEABLE
MANDREL,MACHINE,SOLID
3460-00-254-3088INTERCHANGEABLE
MANDREL,MACHINE,SOLID
3460-00-254-3090INTERCHANGEABLE
MANDREL,MACHINE,SOLID
3460-00-254-3100INTERCHANGEABLE
MANDREL,MACHINE,SOLID

Frequently Asked Questions

What is NSN 3460-00-274-7380?

NSN 3460-00-274-7380 is a Mandrel,expansion, manufactured by Sisters J&j, Inc, classified under FSC 3460 (No Item Name Available). Status: active.

What are the part numbers for NSN 3460-00-274-7380?

NSN 3460-00-274-7380 has 6 cross-referenced part numbers: A-A-51129 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), OO-M-251 (Federal Specifications Promulgated by General Services Administration Washington DC), A-A-51129A TY III, SIZE 1 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), A-A-51129 (Sisters J&j, Inc), MM2 (Dunham Tool Co Inc) and 1 more.

What NSN replaces 3460-00-274-7380?

There are 12 known substitutes for 3460-00-274-7380: 3460-00-224-8978, 3460-00-224-8985, 3460-00-224-8989 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A-A-51129?

Key specifications for A-A-51129: Departure From Cited Designator: EXCEPT FOR SIZE DESIGNATOR; Expansion Range: +0.500 TO 1.000 INCHES IN; Overall Length: 8.500 INCHES MINIMUM IN; Size Designator: 1. 9 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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