PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B107.40Wrench,open End Box

The American Society of Mechanical Engineers · NSN 5120-01-428-8289 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-428-8289 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-428-8289. Primary manufacturer part number: B107.40.
Features
  • Wrench,open End Box — FSC 5120
  • Wrenching Surface Shape: 6 POINT BOTH ENDS INTERNAL
  • Specification/standard Data: 05047-ASME B107.100 CAT 40 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Wrenching Surface Size: 1.125 INCHES NOMINAL SECOND END IN
  • Nondefinitive Spec/std Data: 1 TYPE
  • Surface Treatment: CHROMIUM OVERALL
  • Material: STEEL OVERALL
  • Wrenching Surface Size: 0.875 INCHES NOMINAL FIRST END IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End Box, cataloged under National Stock Number 5120-01-428-8289, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is The American Society of Mechanical Engineers. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-01-428-8289
Primary Part NumberB107.40
Item NameWrench,open End Box
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe American Society of Mechanical Engineers
StatusCANCELLED
Wrenching Surface Shape6 POINT BOTH ENDS INTERNAL
Specification/standard Data05047-ASME B107.100 CAT 40 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Wrenching Surface Size1.125 INCHES NOMINAL SECOND END IN
Nondefinitive Spec/std Data1 TYPE
Surface TreatmentCHROMIUM OVERALL
MaterialSTEEL OVERALL
Wrenching Surface Size0.875 INCHES NOMINAL FIRST END IN
Style DesignatorFLARE NUT DOUBLE END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5120-00-690-7328J3752 INTERCHANGEABLE
Wrench,open End Box
The Stanley Works Dba Stanley Proto
5120-01-428-8298RXS12B INTERCHANGEABLE
Wrench,open End Box
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-01-428-8305RXS16B INTERCHANGEABLE
Wrench,open End Box
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-01-428-8443RXS20B INTERCHANGEABLE
Wrench,open End Box
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-01-429-7381 INTERCHANGEABLE
Wrench Set,open End and Open End
5120-01-486-2102 INTERCHANGEABLE
Wrench,open End Box
5120-01-486-2106J3756T INTERCHANGEABLE
Wrench,open End Box
The Stanley Works Dba Stanley Proto
5120-01-598-3575 INTERCHANGEABLE
Wrench,open End Box
Cross-Reference Index
Part NumberManufacturer
B107.40 The American Society of Mechanical Engineers (USA)
RXH2836S Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
RXFS2836B Snap-on Tools (australia) Pty Ltd (AUS)
B107.40 TY2 General Services Administration Federal Supply Service (USA)
RXFS2836B Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
RXFS2836B Snap on Tools Ma &sd Scribner Tool Supplies (AUS)
RXFS2836A Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
B107.100 CAT 40 TY1 General Services Administration Federal Supply Service (USA)
B107.100 The American Society of Mechanical Engineers (USA)
Related Parts
5120-00-690-7328INTERCHANGEABLE
WRENCH,OPEN END BOX
J3752
5120-01-428-8298INTERCHANGEABLE
WRENCH,OPEN END BOX
RXS12B
5120-01-428-8305INTERCHANGEABLE
WRENCH,OPEN END BOX
RXS16B
5120-01-428-8443INTERCHANGEABLE
WRENCH,OPEN END BOX
RXS20B
5120-01-429-7381INTERCHANGEABLE
WRENCH SET,OPEN END AND OPEN END
5120-01-486-2102INTERCHANGEABLE
WRENCH,OPEN END BOX
5120-01-486-2106INTERCHANGEABLE
WRENCH,OPEN END BOX
J3756T
5120-01-598-3575INTERCHANGEABLE
WRENCH,OPEN END BOX

Frequently Asked Questions

What is NSN 5120-01-428-8289?

NSN 5120-01-428-8289 is a Wrench,open End Box, manufactured by The American Society of Mechanical Engineers, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-01-428-8289?

NSN 5120-01-428-8289 has 9 cross-referenced part numbers: B107.40 (The American Society of Mechanical Engineers), RXH2836S (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc), RXFS2836B (Snap-on Tools (australia) Pty Ltd), B107.40 TY2 (General Services Administration Federal Supply Service), RXFS2836B (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc) and 4 more.

What NSN replaces 5120-01-428-8289?

There are 8 known substitutes for 5120-01-428-8289: 5120-00-690-7328, 5120-01-428-8298, 5120-01-428-8305 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B107.40?

Key specifications for B107.40: Wrenching Surface Shape: 6 POINT BOTH ENDS INTERNAL; Specification/standard Data: 05047-ASME B107.100 CAT 40 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD; Overall Length: 10.500 INCHES NOMINAL IN; Wrenching Surface Size: 1.125 INCHES NOMINAL SECOND END IN. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-01-428-8289 still in active supply?

NSN 5120-01-428-8289 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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