PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J3221Wrench,open End

The Stanley Works Dba Stanley Proto · NSN 5120-01-399-9895 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-399-9895 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-399-9895. Primary manufacturer part number: J3221.
Features
  • Wrench,open End — FSC 5120
  • Style Designator: DOUBLE HEAD
  • Wrenching Surface Shape: OVAL SINGLE END INTERNAL
  • Surface Treatment: CHROMIUM OVERALL
  • Large End Head Angle: 15.0 DEGREES NOMINAL
  • Wrenching Surface Size: 0.312 INCHES NOMINAL SECOND END IN
  • Small End Head Angle: 60.0 DEGREES NOMINAL
  • Material: STEEL OVERALL
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End, cataloged under National Stock Number 5120-01-399-9895, 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 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-399-9895
Primary Part NumberJ3221
Item NameWrench,open End
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe Stanley Works Dba Stanley Proto
StatusACTIVE
Style DesignatorDOUBLE HEAD
Wrenching Surface ShapeOVAL SINGLE END INTERNAL
Surface TreatmentCHROMIUM OVERALL
Large End Head Angle15.0 DEGREES NOMINAL
Wrenching Surface Size0.312 INCHES NOMINAL SECOND END IN
Small End Head Angle60.0 DEGREES NOMINAL
MaterialSTEEL OVERALL
Wrenching Surface Size0.281 INCHES NOMINAL FIRST END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
3030-00-067-9698187L100 INTERCHANGEABLE
Belt,positive Drive
Emerson Electric Co Browning Mfg Div
3110-00-144-8953 INTERCHANGEABLE
Bearing,ball,annular
6145-00-171-0821 INTERCHANGEABLE
Cable,special Purpose,electrical
6625-00-230-63883221 INTERCHANGEABLE
Adapter,test
Fluke Electronics Corp
4330-00-369-3603AC365 INTERCHANGEABLE
Rod,cleaning
Alfa Laval Inc
5935-00-629-812032-21 INTERCHANGEABLE
Connector,plug,electrical
Te Connectivity Corporation Dba Microdot Products
6605-00-688-99843221 INTERCHANGEABLE
Control,underwater Log
Lockheed Martin Corporation Div Rms
5935-00-689-66773221 INTERCHANGEABLE
Connector,plug,electrical
Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division
6515-01-059-44603221 INTERCHANGEABLE
Stockings,anti-Embolism
Covidien Sales Llc Dba Covidien Sales
4320-01-218-27313221 INTERCHANGEABLE
Valve Plate,hydraulic Motor-Pump
DP Manufacturing Inc.
Cross-Reference Index
Part NumberManufacturer
1ANP9 W.w. Grainger, Inc. Div Government Sales Division (USA)
3221 The Stanley Works Dba Stanley Proto (USA)
J3221 PRIMARY The Stanley Works Dba Stanley Proto (USA)
J3221 The Stanley Works Pty Ltd (AUS)
Related Parts
3030-00-067-9698INTERCHANGEABLE
BELT,POSITIVE DRIVE
187L100
3110-00-144-8953INTERCHANGEABLE
BEARING,BALL,ANNULAR
6145-00-171-0821INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
6625-00-230-6388INTERCHANGEABLE
ADAPTER,TEST
3221
4330-00-369-3603INTERCHANGEABLE
ROD,CLEANING
AC365
5935-00-629-8120INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
32-21
6605-00-688-9984INTERCHANGEABLE
CONTROL,UNDERWATER LOG
3221
5935-00-689-6677INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
3221
6515-01-059-4460INTERCHANGEABLE
STOCKINGS,ANTI-EMBOLISM
3221
4320-01-218-2731INTERCHANGEABLE
VALVE PLATE,HYDRAULIC MOTOR-PUMP
3221
5915-01-369-0712INTERCHANGEABLE
FILTER,HIGH PASS
3221-1

Frequently Asked Questions

What is NSN 5120-01-399-9895?

NSN 5120-01-399-9895 is a Wrench,open End, 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 5120-01-399-9895?

NSN 5120-01-399-9895 has 4 cross-referenced part numbers: 1ANP9 (W.w. Grainger, Inc. Div Government Sales Division), 3221 (The Stanley Works Dba Stanley Proto), J3221 (The Stanley Works Dba Stanley Proto), J3221 (The Stanley Works Pty Ltd).

What NSN replaces 5120-01-399-9895?

There are 11 known substitutes for 5120-01-399-9895: 3030-00-067-9698, 3110-00-144-8953, 6145-00-171-0821 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of J3221?

Key specifications for J3221: Style Designator: DOUBLE HEAD; Wrenching Surface Shape: OVAL SINGLE END INTERNAL; Surface Treatment: CHROMIUM OVERALL; Large End Head Angle: 15.0 DEGREES NOMINAL. 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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