PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

388AWrench,open End

American Telephone and Telegraph Co · NSN 5120-00-563-8685 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-563-8685 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-563-8685. Primary manufacturer part number: 388A.
Features
  • Wrench,open End — FSC 5120
  • Small End Head Thickness: 0.062 INCHES NOMINAL IN
  • Large End Head Thickness: 0.062 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Surface Treatment: CHROMIUM AND NICKEL AND OXIDE OVERALL
  • Wrenching Surface Size: 0.250 INCHES NOMINAL SECOND END IN
  • Style Designator: DOUBLE HEAD
  • Wrenching Surface Shape: OVAL BOTH ENDS INTERNAL
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End, cataloged under National Stock Number 5120-00-563-8685, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is American Telephone and Telegraph Co. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-00-563-8685
Primary Part Number388A
Item NameWrench,open End
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerAmerican Telephone and Telegraph Co
StatusCANCELLED
Small End Head Thickness0.062 INCHES NOMINAL IN
Large End Head Thickness0.062 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Surface TreatmentCHROMIUM AND NICKEL AND OXIDE OVERALL
Wrenching Surface Size0.250 INCHES NOMINAL SECOND END IN
Style DesignatorDOUBLE HEAD
Wrenching Surface ShapeOVAL BOTH ENDS INTERNAL
Wrenching Surface Size0.188 INCHES NOMINAL FIRST END IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5960-00-166-7680 INTERCHANGEABLE
Electron Tube
3110-00-275-0113388A INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
5961-01-054-6607 INTERCHANGEABLE
Semiconductor Device,diode
5961-01-098-3290 INTERCHANGEABLE
Semiconductor Device,diode
Cross-Reference Index
Part NumberManufacturer
388A American Telephone and Telegraph Co (USA)
388A Lucent Technologies Inc Dba Federal Marketing Group (USA)
388A Lucent Technologies Inc Corporate Headquarters (USA)
Related Parts
5960-00-166-7680INTERCHANGEABLE
ELECTRON TUBE
3110-00-275-0113INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
388A
5961-01-054-6607INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-01-098-3290INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE

Frequently Asked Questions

What is NSN 5120-00-563-8685?

NSN 5120-00-563-8685 is a Wrench,open End, manufactured by American Telephone and Telegraph Co, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-563-8685?

NSN 5120-00-563-8685 has 3 cross-referenced part numbers: 388A (American Telephone and Telegraph Co), 388A (Lucent Technologies Inc Dba Federal Marketing Group), 388A (Lucent Technologies Inc Corporate Headquarters).

What NSN replaces 5120-00-563-8685?

There are 4 known substitutes for 5120-00-563-8685: 5960-00-166-7680, 3110-00-275-0113, 5961-01-054-6607 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 388A?

Key specifications for 388A: Small End Head Thickness: 0.062 INCHES NOMINAL IN; Large End Head Thickness: 0.062 INCHES NOMINAL IN; Overall Length: 2.875 INCHES NOMINAL IN; Material: STEEL OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-563-8685 still in active supply?

NSN 5120-00-563-8685 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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