PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B107.66Wrench,box and Open End,combinat

The American Society of Mechanical Engineers · NSN 5120-01-631-5073 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-631-5073 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-631-5073. Primary manufacturer part number: B107.66.
Features
  • Wrench,box and Open End,combinat — FSC 5120
  • Nondefinitive Spec/std Data: 2 TYPE
  • Wrenching Surface Shape: OVAL FIRST END INTERNAL
  • Wrenching End Offset Angle: 15.0 DEGREES NOMINAL
  • Style Designator: OFFSET
  • Surface Treatment: CHROMIUM OVERALL
  • Material: STEEL OVERALL
  • Features Provided: FULL POLISH
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,box and Open End,combinat, cataloged under National Stock Number 5120-01-631-5073, 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 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-631-5073
Primary Part NumberB107.66
Item NameWrench,box and Open End,combinat
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe American Society of Mechanical Engineers
StatusACTIVE
Nondefinitive Spec/std Data2 TYPE
Wrenching Surface ShapeOVAL FIRST END INTERNAL
Wrenching End Offset Angle15.0 DEGREES NOMINAL
Style DesignatorOFFSET
Surface TreatmentCHROMIUM OVERALL
MaterialSTEEL OVERALL
Features ProvidedFULL POLISH
Wrenching Surface Shape12 POINT SECOND END INTERNAL
Head Angle15.0 DEGREES NOMINAL
Wrenching Surface Size0.438 INCHES NOMINAL BOTH ENDS IN
Specification/standard Data05047-ASME B107.100 CAT 66 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5905-01-028-639328814 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Ward Leonard Ct Llc
5905-01-186-6773 INTERCHANGEABLE
Resistor,fixed,film
5325-01-505-3287 INTERCHANGEABLE
Ring,retaining
Cross-Reference Index
Part NumberManufacturer
B107.66 The American Society of Mechanical Engineers (USA)
B107.66 TY2 General Services Administration Federal Supply Service (USA)
9527N Apex Tool Group, Llc Dba Nicholson (USA)
B107.100 CAT 66 TY2 General Services Administration Federal Supply Service (USA)
28-814 Apex Tool Group, Llc Dba Nicholson (USA)
B107.100 The American Society of Mechanical Engineers (USA)
28-814 Armstrong Bros Tool Co (USA)
Related Parts
5905-01-028-6393INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
28814
5905-01-186-6773INTERCHANGEABLE
RESISTOR,FIXED,FILM
5325-01-505-3287INTERCHANGEABLE
RING,RETAINING

Frequently Asked Questions

What is NSN 5120-01-631-5073?

NSN 5120-01-631-5073 is a Wrench,box and Open End,combinat, manufactured by The American Society of Mechanical Engineers, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-631-5073?

NSN 5120-01-631-5073 has 7 cross-referenced part numbers: B107.66 (The American Society of Mechanical Engineers), B107.66 TY2 (General Services Administration Federal Supply Service), 9527N (Apex Tool Group, Llc Dba Nicholson), B107.100 CAT 66 TY2 (General Services Administration Federal Supply Service), 28-814 (Apex Tool Group, Llc Dba Nicholson) and 2 more.

What NSN replaces 5120-01-631-5073?

There are 3 known substitutes for 5120-01-631-5073: 5905-01-028-6393, 5905-01-186-6773, 5325-01-505-3287. Verify interchangeability with system specifications before substitution.

What are the specifications of B107.66?

Key specifications for B107.66: Nondefinitive Spec/std Data: 2 TYPE; Wrenching Surface Shape: OVAL FIRST END INTERNAL; Wrenching End Offset Angle: 15.0 DEGREES NOMINAL; Overall Length: 6.413 INCHES NOMINAL IN. 13 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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