PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B107.100Wrench,open End

The American Society of Mechanical Engineers · NSN 5120-01-398-9304 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-398-9304 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-398-9304. Primary manufacturer part number: B107.100.
Features
  • Wrench,open End — FSC 5120
  • Large End Head Angle: 15.0 DEGREES NOMINAL
  • Nondefinitive Spec/std Data: 1 TYPE AND 1 CLASS
  • Material: STEEL OVERALL
  • Wrenching Surface Size: 27.0 MILLIMETERS NOMINAL SECOND END MM
  • Wrenching Surface Shape: OVAL BOTH ENDS INTERNAL
  • Specification/standard Data: 05047-ASME B107.100/B107.39 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Wrenching Surface Size: 25.0 MILLIMETERS NOMINAL FIRST END MM
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End, cataloged under National Stock Number 5120-01-398-9304, 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 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-398-9304
Primary Part NumberB107.100
Item NameWrench,open End
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe American Society of Mechanical Engineers
StatusACTIVE
Large End Head Angle15.0 DEGREES NOMINAL
Nondefinitive Spec/std Data1 TYPE AND 1 CLASS
MaterialSTEEL OVERALL
Wrenching Surface Size27.0 MILLIMETERS NOMINAL SECOND END MM
Wrenching Surface ShapeOVAL BOTH ENDS INTERNAL
Specification/standard Data05047-ASME B107.100/B107.39 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Wrenching Surface Size25.0 MILLIMETERS NOMINAL FIRST END MM
Surface TreatmentCHROMIUM OVERALL
Small End Head Angle15.0 DEGREES NOMINAL
Style DesignatorDOUBLE HEAD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5307-00-159-623111640937-1 INTERCHANGEABLE
Stud,plain
U S Army Tank Automotive Command Amsta-Im-Mm
2530-00-383-9989642967 INTERCHANGEABLE
Brake Shoe Set
Am General Llc
5315-00-733-5168 INTERCHANGEABLE
Key,carbon Packing
5930-01-254-2150GS837GW13 INTERCHANGEABLE
Switch,push
Northrop Grumman Systems Corporation
4820-01-282-5088 INTERCHANGEABLE
Seat,valve
4320-01-649-398044516 INTERCHANGEABLE
Shaft,transmission,pump
Cat Pumps Corp
5310-01-659-484412600923 INTERCHANGEABLE
Washer,flat
Oshkosh Defense Llc
Cross-Reference Index
Part NumberManufacturer
B107.100 The American Society of Mechanical Engineers (USA)
B107.39 The American Society of Mechanical Engineers (USA)
00944516000 Sears, Roebuck and Co. Dba Sears Div Sears Commercial (USA)
B107.39 TY1CL1 General Services Administration Federal Supply Service (USA)
9-44516 Sears, Roebuck and Co. Dba Sears Div Sears Commercial (USA)
44516 Sears, Roebuck and Co. Dba Sears Div Sears Commercial (USA)
Related Parts
5307-00-159-6231INTERCHANGEABLE
STUD,PLAIN
11640937-1
2530-00-383-9989INTERCHANGEABLE
BRAKE SHOE SET
642967
5315-00-733-5168INTERCHANGEABLE
KEY,CARBON PACKING
5930-01-254-2150INTERCHANGEABLE
SWITCH,PUSH
GS837GW13
4820-01-282-5088INTERCHANGEABLE
SEAT,VALVE
4320-01-649-3980INTERCHANGEABLE
SHAFT,TRANSMISSION,PUMP
44516
5310-01-659-4844INTERCHANGEABLE
WASHER,FLAT
12600923

Frequently Asked Questions

What is NSN 5120-01-398-9304?

NSN 5120-01-398-9304 is a Wrench,open End, 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 5120-01-398-9304?

NSN 5120-01-398-9304 has 6 cross-referenced part numbers: B107.100 (The American Society of Mechanical Engineers), B107.39 (The American Society of Mechanical Engineers), 00944516000 (Sears, Roebuck and Co. Dba Sears Div Sears Commercial), B107.39 TY1CL1 (General Services Administration Federal Supply Service), 9-44516 (Sears, Roebuck and Co. Dba Sears Div Sears Commercial) and 1 more.

What NSN replaces 5120-01-398-9304?

There are 7 known substitutes for 5120-01-398-9304: 5307-00-159-6231, 2530-00-383-9989, 5315-00-733-5168 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B107.100?

Key specifications for B107.100: Large End Head Angle: 15.0 DEGREES NOMINAL; Nondefinitive Spec/std Data: 1 TYPE AND 1 CLASS; Material: STEEL OVERALL; Wrenching Surface Size: 27.0 MILLIMETERS NOMINAL SECOND END MM. 11 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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