PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B107.100Wrench,open End Box

The American Society of Mechanical Engineers · NSN 5120-01-106-5393 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-106-5393 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-106-5393. Primary manufacturer part number: B107.100.
Features
  • Wrench,open End Box — FSC 5120
  • Wrenching Surface Shape: 12 POINT BOTH ENDS INTERNAL
  • Wrenching Surface Size: 0.438 INCHES NOMINAL SECOND END IN
  • Surface Treatment: CHROMIUM OVERALL
  • Style Designator: FLARE NUT DOUBLE END
  • Wrenching Surface Size: 0.375 INCHES NOMINAL FIRST END IN
  • Nondefinitive Spec/std Data: 1 TYPE AND 2 CLASS AND A STYLE AND B DESIGN
  • Specification/standard Data: 0U583-SAE AS4167 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End Box, cataloged under National Stock Number 5120-01-106-5393, 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 9 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-106-5393
Primary Part NumberB107.100
Item NameWrench,open End Box
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe American Society of Mechanical Engineers
StatusACTIVE
Wrenching Surface Shape12 POINT BOTH ENDS INTERNAL
Wrenching Surface Size0.438 INCHES NOMINAL SECOND END IN
Surface TreatmentCHROMIUM OVERALL
Style DesignatorFLARE NUT DOUBLE END
Wrenching Surface Size0.375 INCHES NOMINAL FIRST END IN
Nondefinitive Spec/std Data1 TYPE AND 2 CLASS AND A STYLE AND B DESIGN
Specification/standard Data0U583-SAE AS4167 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
MaterialSTEEL OVERALL
Large End Head Thickness0.375 INCHES NOMINAL IN
Small End Head Thickness0.344 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5120-00-269-7972 INTERCHANGEABLE
Wrench,open End Box
5120-00-269-7973XFN-2836 INTERCHANGEABLE
Wrench,open End Box
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-00-935-7366 INTERCHANGEABLE
Wrench,open End Box
5120-00-935-7367 INTERCHANGEABLE
Wrench,open End Box
5120-01-306-8380 INTERCHANGEABLE
Wrench,open End Box
Cross-Reference Index
Part NumberManufacturer
B107.100 The American Society of Mechanical Engineers (USA)
RXF1214B Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
AS4167 TY1CL2STADEB General Services Administration Federal Supply Service (USA)
B107.40 TY1 General Services Administration Federal Supply Service (USA)
AS4167 Society of Automotive Engineers Inc (USA)
B107.40 The American Society of Mechanical Engineers (USA)
RXH1214 Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
RXF1214A Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
AS4167 Sae International Dba Sae International (USA)
Related Parts
5120-00-269-7972INTERCHANGEABLE
WRENCH,OPEN END BOX
5120-00-269-7973INTERCHANGEABLE
WRENCH,OPEN END BOX
XFN-2836
5120-00-935-7366INTERCHANGEABLE
WRENCH,OPEN END BOX
5120-00-935-7367INTERCHANGEABLE
WRENCH,OPEN END BOX
5120-01-306-8380INTERCHANGEABLE
WRENCH,OPEN END BOX

Frequently Asked Questions

What is NSN 5120-01-106-5393?

NSN 5120-01-106-5393 is a Wrench,open End Box, 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 5120-01-106-5393?

NSN 5120-01-106-5393 has 9 cross-referenced part numbers: B107.100 (The American Society of Mechanical Engineers), RXF1214B (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc), AS4167 TY1CL2STADEB (General Services Administration Federal Supply Service), B107.40 TY1 (General Services Administration Federal Supply Service), AS4167 (Society of Automotive Engineers Inc) and 4 more.

What NSN replaces 5120-01-106-5393?

There are 5 known substitutes for 5120-01-106-5393: 5120-00-269-7972, 5120-00-269-7973, 5120-00-935-7366 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B107.100?

Key specifications for B107.100: Wrenching Surface Shape: 12 POINT BOTH ENDS INTERNAL; Wrenching Surface Size: 0.438 INCHES NOMINAL SECOND END IN; Surface Treatment: CHROMIUM OVERALL; Style Designator: FLARE NUT DOUBLE END. 11 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com