PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

W-66Wrench,box and Open End,combinat

Ngk Metals Corporation Dba N G K Berylco · NSN 5120-00-177-7322 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-177-7322 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-177-7322. Primary manufacturer part number: W-66.
Features
  • Wrench,box and Open End,combinat — FSC 5120
  • Wrenching Surface Shape: OVAL FIRST END INTERNAL
  • Wrenching End Offset Angle: 15.0 DEGREES NOMINAL
  • Style Designator: OFFSET
  • Wrenching Surface Shape: 12 POINT SECOND END INTERNAL
  • Material: COPPER ALLOY OVERALL
  • Head Angle: 15.0 DEGREES NOMINAL
  • Features Provided: NONMAGNETIC AND NONSPARKING
Applications
  • Applications requiring Copper Alloy Overall construction
General Description

The Wrench,box and Open End,combinat, cataloged under National Stock Number 5120-00-177-7322, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Ngk Metals Corporation Dba N G K Berylco. 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-00-177-7322
Primary Part NumberW-66
Item NameWrench,box and Open End,combinat
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerNgk Metals Corporation Dba N G K Berylco
StatusACTIVE
Wrenching Surface ShapeOVAL FIRST END INTERNAL
Wrenching End Offset Angle15.0 DEGREES NOMINAL
Style DesignatorOFFSET
Wrenching Surface Shape12 POINT SECOND END INTERNAL
MaterialCOPPER ALLOY OVERALL
Head Angle15.0 DEGREES NOMINAL
Features ProvidedNONMAGNETIC AND NONSPARKING
Wrenching Surface Size0.750 INCHES NOMINAL BOTH ENDS IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5325-00-353-2994601K311 INTERCHANGEABLE
Ring,retaining
Hyster-Yale Group, Inc. Dba Yale Materials Handling
5999-01-436-9506W66 INTERCHANGEABLE
Heater,thermal Release
Rockwell Automation, Inc. Dba Rockwell Automation
Cross-Reference Index
Part NumberManufacturer
W-661 Ampco Metal Inc. Dba Ampco Metal Inc (USA)
W-66 PRIMARY Ngk Metals Corporation Dba N G K Berylco (USA)
W-661 PRIMARY Ampco Partners, Ltd. Dba Ampco Safety Tools (USA)
W-66-2367 Ngk Metals Corporation Dba N G K Berylco (USA)
Related Parts
5325-00-353-2994INTERCHANGEABLE
RING,RETAINING
601K311
5999-01-436-9506INTERCHANGEABLE
HEATER,THERMAL RELEASE
W66

Frequently Asked Questions

What is NSN 5120-00-177-7322?

NSN 5120-00-177-7322 is a Wrench,box and Open End,combinat, manufactured by Ngk Metals Corporation Dba N G K Berylco, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-00-177-7322?

NSN 5120-00-177-7322 has 4 cross-referenced part numbers: W-661 (Ampco Metal Inc. Dba Ampco Metal Inc), W-66 (Ngk Metals Corporation Dba N G K Berylco), W-661 (Ampco Partners, Ltd. Dba Ampco Safety Tools), W-66-2367 (Ngk Metals Corporation Dba N G K Berylco).

What NSN replaces 5120-00-177-7322?

There are 2 known substitutes for 5120-00-177-7322: 5325-00-353-2994, 5999-01-436-9506. Verify interchangeability with system specifications before substitution.

What are the specifications of W-66?

Key specifications for W-66: Overall Length: 9.500 INCHES NOMINAL IN; Wrenching Surface Shape: OVAL FIRST END INTERNAL; Wrenching End Offset Angle: 15.0 DEGREES NOMINAL; Style Designator: OFFSET. 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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