PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J4737Screwdriver Attachment,socket Wr

The Stanley Works Dba Stanley Proto · NSN 5120-01-399-9788 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-399-9788 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-399-9788. Primary manufacturer part number: J4737.
Features
  • Screwdriver Attachment,socket Wr — FSC 5120
  • Drive Surface Size: 0.250 INCHES NOMINAL SINGLE END IN
  • Features Provided: MANUAL TOOL
  • Tip Size Designation: 1
  • Surface Treatment: CHROMIUM OVERALL
  • Style Designator: PHILLIPS (CROSS)
  • Wrenching Surface Shape: PHILLIPS (CROSS) SINGLE END EXTERNAL
  • Material: STEEL OVERALL
Applications
  • Applications requiring Steel Overall construction
General Description

The Screwdriver Attachment,socket Wr, cataloged under National Stock Number 5120-01-399-9788, 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 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-399-9788
Primary Part NumberJ4737
Item NameScrewdriver Attachment,socket Wr
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe Stanley Works Dba Stanley Proto
StatusACTIVE
Drive Surface Size0.250 INCHES NOMINAL SINGLE END IN
Features ProvidedMANUAL TOOL
Tip Size Designation1
Surface TreatmentCHROMIUM OVERALL
Style DesignatorPHILLIPS (CROSS)
Wrenching Surface ShapePHILLIPS (CROSS) SINGLE END EXTERNAL
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5999-00-035-9027 INTERCHANGEABLE
Contact,electrical
5365-00-050-96554737 INTERCHANGEABLE
Shim
Eaton Aerospace, Llc Dba Jackson South
6625-00-349-9924 INTERCHANGEABLE
Bridge,resistance
1680-00-868-72024737 INTERCHANGEABLE
Tube,torque
B/e Aerospace Inc Dba Interturbine
4810-01-101-55014737 INTERCHANGEABLE
Body Assy,valve
Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems
5320-01-133-2221 INTERCHANGEABLE
Rivet,solid
5905-01-173-8984604-288 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Miller Electric Mfg. Llc
4440-01-203-05764737D-G503 INTERCHANGEABLE
Dehydrator Unit,nonreactivating
Howell Laboratories Inc Dba Howell Laboratories Inc
3020-01-239-53574737 INTERCHANGEABLE
Gear,helical
Servo Products Co
5365-01-551-67654737- INTERCHANGEABLE
Bushing Blank
Fatigue Technology, Inc
Cross-Reference Index
Part NumberManufacturer
4737 The Stanley Works Dba Stanley Proto (USA)
1AF61 W.w. Grainger, Inc. Div Government Sales Division (USA)
J4737 PRIMARY The Stanley Works Dba Stanley Proto (USA)
Related Parts
5999-00-035-9027INTERCHANGEABLE
CONTACT,ELECTRICAL
5365-00-050-9655INTERCHANGEABLE
SHIM
4737
6625-00-349-9924INTERCHANGEABLE
BRIDGE,RESISTANCE
1680-00-868-7202INTERCHANGEABLE
TUBE,TORQUE
4737
4810-01-101-5501INTERCHANGEABLE
BODY ASSY,VALVE
4737
5320-01-133-2221INTERCHANGEABLE
RIVET,SOLID
5905-01-173-8984INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
604-288
4440-01-203-0576INTERCHANGEABLE
DEHYDRATOR UNIT,NONREACTIVATING
4737D-G503
3020-01-239-5357INTERCHANGEABLE
GEAR,HELICAL
4737
5365-01-551-6765INTERCHANGEABLE
BUSHING BLANK
4737-

Frequently Asked Questions

What is NSN 5120-01-399-9788?

NSN 5120-01-399-9788 is a Screwdriver Attachment,socket Wr, 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 5120-01-399-9788?

NSN 5120-01-399-9788 has 3 cross-referenced part numbers: 4737 (The Stanley Works Dba Stanley Proto), 1AF61 (W.w. Grainger, Inc. Div Government Sales Division), J4737 (The Stanley Works Dba Stanley Proto).

What NSN replaces 5120-01-399-9788?

There are 10 known substitutes for 5120-01-399-9788: 5999-00-035-9027, 5365-00-050-9655, 6625-00-349-9924 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of J4737?

Key specifications for J4737: Drive Surface Size: 0.250 INCHES NOMINAL SINGLE END IN; Features Provided: MANUAL TOOL; Tip Size Designation: 1; Surface Treatment: CHROMIUM OVERALL. 8 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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