PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J3755TWrench,open End Box

The Stanley Works Dba Stanley Proto · NSN 5120-01-486-2105 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-486-2105 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-486-2105. Primary manufacturer part number: J3755T.
Features
  • Wrench,open End Box — FSC 5120
  • Wrenching Surface Shape: 12 POINT SECOND END INTERNAL
  • Surface Treatment: CHROMIUM OVERALL
  • Wrenching Surface Shape: HEXAGON FIRST END INTERNAL
  • Nondefinitive Spec/std Data: 1 TYPE AND 2 CLASS AND B STYLE
  • Material: STEEL OVERALL
  • Style Designator: STRAIGHT JAW
  • Wrenching Surface Size: 0.625 INCHES NOMINAL BOTH ENDS IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End Box, cataloged under National Stock Number 5120-01-486-2105, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is The Stanley Works Dba Stanley Proto. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 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
NSN5120-01-486-2105
Primary Part NumberJ3755T
Item NameWrench,open End Box
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe Stanley Works Dba Stanley Proto
StatusACTIVE
Wrenching Surface Shape12 POINT SECOND END INTERNAL
Surface TreatmentCHROMIUM OVERALL
Wrenching Surface ShapeHEXAGON FIRST END INTERNAL
Nondefinitive Spec/std Data1 TYPE AND 2 CLASS AND B STYLE
MaterialSTEEL OVERALL
Style DesignatorSTRAIGHT JAW
Wrenching Surface Size0.625 INCHES NOMINAL BOTH ENDS IN
Specification/standard Data0U583-SAE AS4167 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5120-01-306-3228 INTERCHANGEABLE
Wrench,open End Box
5120-01-306-3229 INTERCHANGEABLE
Wrench,open End Box
5120-01-306-3230 INTERCHANGEABLE
Wrench,open End Box
5120-01-306-3231 INTERCHANGEABLE
Wrench,open End Box
5120-01-306-3232 INTERCHANGEABLE
Wrench,open End Box
5120-01-486-2101J3752T INTERCHANGEABLE
Wrench,open End Box
The Stanley Works Dba Stanley Proto
5120-01-486-2102 INTERCHANGEABLE
Wrench,open End Box
Cross-Reference Index
Part NumberManufacturer
5F357 W.w. Grainger, Inc. Div Government Sales Division (USA)
AS4167 Society of Automotive Engineers Inc (USA)
3755T The Stanley Works Dba Stanley Proto (USA)
AS4167 TY1CL2STC General Services Administration Federal Supply Service (USA)
AS4167 Sae International Dba Sae International (USA)
J3755T PRIMARY The Stanley Works Dba Stanley Proto (USA)
Related Parts
5120-01-306-3228INTERCHANGEABLE
WRENCH,OPEN END BOX
5120-01-306-3229INTERCHANGEABLE
WRENCH,OPEN END BOX
5120-01-306-3230INTERCHANGEABLE
WRENCH,OPEN END BOX
5120-01-306-3231INTERCHANGEABLE
WRENCH,OPEN END BOX
5120-01-306-3232INTERCHANGEABLE
WRENCH,OPEN END BOX
5120-01-486-2101INTERCHANGEABLE
WRENCH,OPEN END BOX
J3752T
5120-01-486-2102INTERCHANGEABLE
WRENCH,OPEN END BOX

Frequently Asked Questions

What is NSN 5120-01-486-2105?

NSN 5120-01-486-2105 is a Wrench,open End Box, manufactured by The Stanley Works Dba Stanley Proto, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-486-2105?

NSN 5120-01-486-2105 has 6 cross-referenced part numbers: 5F357 (W.w. Grainger, Inc. Div Government Sales Division), AS4167 (Society of Automotive Engineers Inc), 3755T (The Stanley Works Dba Stanley Proto), AS4167 TY1CL2STC (General Services Administration Federal Supply Service), AS4167 (Sae International Dba Sae International) and 1 more.

What NSN replaces 5120-01-486-2105?

There are 7 known substitutes for 5120-01-486-2105: 5120-01-306-3228, 5120-01-306-3229, 5120-01-306-3230 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of J3755T?

Key specifications for J3755T: Wrenching Surface Shape: 12 POINT SECOND END INTERNAL; Surface Treatment: CHROMIUM OVERALL; Overall Length: 7.625 INCHES MINIMUM IN; Wrenching Surface Shape: HEXAGON FIRST END INTERNAL. 9 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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