PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J3756TWrench,open End Box

The Stanley Works Dba Stanley Proto · NSN 5120-01-486-2106 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-486-2106 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-486-2106. Primary manufacturer part number: J3756T.
Features
  • Wrench,open End Box — FSC 5120
  • Material: STEEL OVERALL
  • Style Designator: STRAIGHT JAW
  • Surface Treatment: CHROMIUM OVERALL
  • Nondefinitive Spec/std Data: 2 TYPE
  • Wrenching Surface Shape: HEXAGON FIRST END INTERNAL
  • Specification/standard Data: 05047-ASME B107.100/B107.40 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Wrenching Surface Shape: 12 POINT SECOND END INTERNAL
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End Box, cataloged under National Stock Number 5120-01-486-2106, 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 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-486-2106
Primary Part NumberJ3756T
Item NameWrench,open End Box
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe Stanley Works Dba Stanley Proto
StatusACTIVE
MaterialSTEEL OVERALL
Style DesignatorSTRAIGHT JAW
Surface TreatmentCHROMIUM OVERALL
Nondefinitive Spec/std Data2 TYPE
Wrenching Surface ShapeHEXAGON FIRST END INTERNAL
Specification/standard Data05047-ASME B107.100/B107.40 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Wrenching Surface Shape12 POINT SECOND END INTERNAL
Wrenching Surface Size0.687 INCHES NOMINAL BOTH ENDS IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5120-00-690-7328J3752 INTERCHANGEABLE
Wrench,open End Box
The Stanley Works Dba Stanley Proto
5120-01-428-8289 INTERCHANGEABLE
Wrench,open End Box
5120-01-428-8298RXS12B INTERCHANGEABLE
Wrench,open End Box
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-01-428-8305RXS16B INTERCHANGEABLE
Wrench,open End Box
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-01-428-8443RXS20B INTERCHANGEABLE
Wrench,open End Box
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-01-429-7381 INTERCHANGEABLE
Wrench Set,open End and Open End
5120-01-486-2102 INTERCHANGEABLE
Wrench,open End Box
5120-01-598-3575 INTERCHANGEABLE
Wrench,open End Box
Cross-Reference Index
Part NumberManufacturer
5F358 W.w. Grainger, Inc. Div Government Sales Division (USA)
B107.40 The American Society of Mechanical Engineers (USA)
B107.40 TY2 General Services Administration Federal Supply Service (USA)
3756T The Stanley Works Dba Stanley Proto (USA)
J3756T PRIMARY The Stanley Works Dba Stanley Proto (USA)
B107.100 The American Society of Mechanical Engineers (USA)
Related Parts
5120-00-690-7328INTERCHANGEABLE
WRENCH,OPEN END BOX
J3752
5120-01-428-8289INTERCHANGEABLE
WRENCH,OPEN END BOX
5120-01-428-8298INTERCHANGEABLE
WRENCH,OPEN END BOX
RXS12B
5120-01-428-8305INTERCHANGEABLE
WRENCH,OPEN END BOX
RXS16B
5120-01-428-8443INTERCHANGEABLE
WRENCH,OPEN END BOX
RXS20B
5120-01-429-7381INTERCHANGEABLE
WRENCH SET,OPEN END AND OPEN END
5120-01-486-2102INTERCHANGEABLE
WRENCH,OPEN END BOX
5120-01-598-3575INTERCHANGEABLE
WRENCH,OPEN END BOX

Frequently Asked Questions

What is NSN 5120-01-486-2106?

NSN 5120-01-486-2106 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 5120-01-486-2106?

NSN 5120-01-486-2106 has 6 cross-referenced part numbers: 5F358 (W.w. Grainger, Inc. Div Government Sales Division), B107.40 (The American Society of Mechanical Engineers), B107.40 TY2 (General Services Administration Federal Supply Service), 3756T (The Stanley Works Dba Stanley Proto), J3756T (The Stanley Works Dba Stanley Proto) and 1 more.

What NSN replaces 5120-01-486-2106?

There are 8 known substitutes for 5120-01-486-2106: 5120-00-690-7328, 5120-01-428-8289, 5120-01-428-8298 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of J3756T?

Key specifications for J3756T: Overall Length: 11.687 INCHES MINIMUM IN; Material: STEEL OVERALL; Style Designator: STRAIGHT JAW; Surface Treatment: CHROMIUM OVERALL. 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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