PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B107.40Wrench,open End Box

The American Society of Mechanical Engineers · NSN 5120-01-598-3575 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-598-3575 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-598-3575. Primary manufacturer part number: B107.40.
Features
  • Wrench,open End Box — FSC 5120
  • Small End Head Thickness: 1.120 INCHES NOMINAL IN
  • Large End Head Thickness: 1.180 INCHES NOMINAL IN
  • Wrenching Surface Size: 0.875 INCHES NOMINAL SECOND END IN
  • Wrenching Surface Shape: 6 POINT BOTH ENDS INTERNAL
  • Wrenching Surface Size: 0.750 INCHES NOMINAL FIRST END IN
  • Specification/standard Data: 05047-ASME B107.100 CAT 40 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Surface Treatment: CHROMIUM OVERALL
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End Box, cataloged under National Stock Number 5120-01-598-3575, 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 10 commercial cross-references from 7 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
NSN5120-01-598-3575
Primary Part NumberB107.40
Item NameWrench,open End Box
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe American Society of Mechanical Engineers
StatusACTIVE
Small End Head Thickness1.120 INCHES NOMINAL IN
Large End Head Thickness1.180 INCHES NOMINAL IN
Wrenching Surface Size0.875 INCHES NOMINAL SECOND END IN
Wrenching Surface Shape6 POINT BOTH ENDS INTERNAL
Wrenching Surface Size0.750 INCHES NOMINAL FIRST END IN
Specification/standard Data05047-ASME B107.100 CAT 40 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Surface TreatmentCHROMIUM OVERALL
Style DesignatorFLARE NUT DOUBLE END
Nondefinitive Spec/std Data1 TYPE
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-262-4814FC14297 INTERCHANGEABLE
Washer,flat
Federal Mogul Corp Sub Wagner Brake Moog Automotive Div
4820-00-308-985428442 INTERCHANGEABLE
Stem,fluid Valve
Leslie Controls, Inc. Dba Leslie Controls Inc
2530-00-558-5588FE661 INTERCHANGEABLE
Cylinder Assembly,hydraulic Brak
Federal Mogul Corp Sub Wagner Brake Moog Automotive Div
4720-00-678-873528442 INTERCHANGEABLE
Hose,nonmetallic
Gates Corporation
4310-00-679-8815R22505 INTERCHANGEABLE
Ring Set,piston
Kaydon Ring & Seal Inc Dba Skf Precision Technologies
5120-00-690-7328J3752 INTERCHANGEABLE
Wrench,open End Box
The Stanley Works Dba Stanley Proto
5360-00-804-482281685 INTERCHANGEABLE
Spring,helical,compression
Hydro-Aire Aerospace Corp
3120-01-017-729728442 INTERCHANGEABLE
Bearing,sleeve
Hydro-Aire Aerospace Corp
5998-01-158-526528442 INTERCHANGEABLE
Circuit Card Assembly
Hamilton Sundstrand Corporation Dba Collins Aerospace
5998-01-193-1337028442 INTERCHANGEABLE
Printed Circuit Board
Abd Intl Inc Dba Abdick
Cross-Reference Index
Part NumberManufacturer
B107.40 The American Society of Mechanical Engineers (USA)
28-442 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
B107.100 CAT 40 TY1 General Services Administration Federal Supply Service (USA)
28-442 Armstrong Bros Tool Co (USA)
B107.100 The American Society of Mechanical Engineers (USA)
B107.40 TY2 General Services Administration Federal Supply Service (USA)
1628 Wright Tool Company, Llc (USA)
81685 Apex Tool Group, Llc Dba Nicholson (USA)
28-442 Apex Tool Group, Llc Dba Nicholson (USA)
456720009602 Ncb Hungary (honvedsegi Egyseges Termekkod) (HUN)
Related Parts
5310-00-262-4814INTERCHANGEABLE
WASHER,FLAT
FC14297
4820-00-308-9854INTERCHANGEABLE
STEM,FLUID VALVE
28442
2530-00-558-5588INTERCHANGEABLE
CYLINDER ASSEMBLY,HYDRAULIC BRAK
FE661
4720-00-678-8735INTERCHANGEABLE
HOSE,NONMETALLIC
28442
4310-00-679-8815INTERCHANGEABLE
RING SET,PISTON
R22505
5120-00-690-7328INTERCHANGEABLE
WRENCH,OPEN END BOX
J3752
5360-00-804-4822INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
81685
3120-01-017-7297INTERCHANGEABLE
BEARING,SLEEVE
28442
5998-01-158-5265INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
28442
5998-01-193-1337INTERCHANGEABLE
PRINTED CIRCUIT BOARD
028442
8030-01-286-3924INTERCHANGEABLE
SEALING COMPOUND
5120-01-428-8289INTERCHANGEABLE
WRENCH,OPEN END BOX

Frequently Asked Questions

What is NSN 5120-01-598-3575?

NSN 5120-01-598-3575 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 5120-01-598-3575?

NSN 5120-01-598-3575 has 10 cross-referenced part numbers: B107.40 (The American Society of Mechanical Engineers), 28-442 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.), B107.100 CAT 40 TY1 (General Services Administration Federal Supply Service), 28-442 (Armstrong Bros Tool Co), B107.100 (The American Society of Mechanical Engineers) and 5 more.

What NSN replaces 5120-01-598-3575?

There are 12 known substitutes for 5120-01-598-3575: 5310-00-262-4814, 4820-00-308-9854, 2530-00-558-5588 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B107.40?

Key specifications for B107.40: Small End Head Thickness: 1.120 INCHES NOMINAL IN; Overall Length: 7.560 INCHES NOMINAL IN; Large End Head Thickness: 1.180 INCHES NOMINAL IN; Wrenching Surface Size: 0.875 INCHES NOMINAL SECOND END IN. 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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