PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

662611Key,socket Head Screw

Cascade Corp · NSN 5120-00-773-8026 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-773-8026 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-773-8026. Primary manufacturer part number: 662611.
Features
  • Key,socket Head Screw — FSC 5120
  • Surface Treatment: OXIDE OVERALL
  • Material: STEEL OVERALL
  • Style Designator: TEE HANDLE
  • Specification/standard Data: 05047-ASME B18.3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Features Provided: REPLACEABLE WRENCHING FEATURE
  • Wrenching Surface Shape: HEXAGON SINGLE END EXTERNAL
  • Wrenching Surface Size: 0.188 INCHES NOMINAL SINGLE END IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Key,socket Head Screw, cataloged under National Stock Number 5120-00-773-8026, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Cascade Corp. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-00-773-8026
Primary Part Number662611
Item NameKey,socket Head Screw
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerCascade Corp
StatusCANCELLED
Surface TreatmentOXIDE OVERALL
MaterialSTEEL OVERALL
Style DesignatorTEE HANDLE
Specification/standard Data05047-ASME B18.3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Features ProvidedREPLACEABLE WRENCHING FEATURE
Wrenching Surface ShapeHEXAGON SINGLE END EXTERNAL
Wrenching Surface Size0.188 INCHES NOMINAL SINGLE END IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
5120-00-240-56185120-00-240-5618 INTERCHANGEABLE
Clamp,c
General Services Administration Federal Supply Service
5342-00-597-6821780-10 INTERCHANGEABLE
Mount,resilient,weapon System
Hutchinson Aerospace & Industry, Inc. Dba Barry Wright Corp
5310-00-873-70168437178 INTERCHANGEABLE
Washer,flat
Army, United States Department of the Dba Rock Island Arsenal Jmtc
5999-00-998-849566261-1 INTERCHANGEABLE
Contact,electrical
Te Connectivity Corporation
5962-01-102-0627 INTERCHANGEABLE
Microcircuit,digital
5365-01-208-694378010 INTERCHANGEABLE
Spacer,ring
William Powell Company, the Dba Powell Valve Div the Starflo Corporation
4720-01-251-3109F4210606-6-6-20.00 INTERCHANGEABLE
Hose Assembly,nonmetallic
Parker-Hannifin Corporation Dba Pneutronics Div Hose Products Division
2530-01-255-44611002204 INTERCHANGEABLE
Wheel Assembly,pneumatic Tire
Tld Ace Corp Div Tld Ace
4720-01-543-574878010-1 INTERCHANGEABLE
Hose,nonmetallic
Drs Sustainment Systems Inc
Cross-Reference Index
Part NumberManufacturer
662611 Cascade Corp (USA)
GGG-K-275 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
8932203-1 Lockheed Martin Corporation Div Rms (USA)
B18.3 The American Society of Mechanical Engineers (USA)
8932203-1 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
GGG-K-275 TY6STA General Services Administration Federal Supply Service (USA)
609 3/16 Allen Mfg Co Sub of Chicago Pneumatic Tool Co (USA)
8426314 Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA)
78010 Allen Mfg Co Sub of Chicago Pneumatic Tool Co (USA)
Related Parts
5120-00-240-5618INTERCHANGEABLE
CLAMP,C
5120-00-240-5618
5342-00-597-6821INTERCHANGEABLE
MOUNT,RESILIENT,WEAPON SYSTEM
780-10
5310-00-873-7016INTERCHANGEABLE
WASHER,FLAT
8437178
5999-00-998-8495INTERCHANGEABLE
CONTACT,ELECTRICAL
66261-1
5962-01-102-0627INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
5365-01-208-6943INTERCHANGEABLE
SPACER,RING
78010
4720-01-251-3109INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
F4210606-6-6-20.00
2530-01-255-4461INTERCHANGEABLE
WHEEL ASSEMBLY,PNEUMATIC TIRE
1002204
4720-01-543-5748INTERCHANGEABLE
HOSE,NONMETALLIC
78010-1

Frequently Asked Questions

What is NSN 5120-00-773-8026?

NSN 5120-00-773-8026 is a Key,socket Head Screw, manufactured by Cascade Corp, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-773-8026?

NSN 5120-00-773-8026 has 9 cross-referenced part numbers: 662611 (Cascade Corp), GGG-K-275 (Federal Specifications Promulgated by General Services Administration Washington DC), 8932203-1 (Lockheed Martin Corporation Div Rms), B18.3 (The American Society of Mechanical Engineers), 8932203-1 (Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin) and 4 more.

What NSN replaces 5120-00-773-8026?

There are 9 known substitutes for 5120-00-773-8026: 5120-00-240-5618, 5342-00-597-6821, 5310-00-873-7016 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 662611?

Key specifications for 662611: Overall Width: 4.000 INCHES MINIMUM AND 4.500 INCHES MAXIMUM IN; Surface Treatment: OXIDE OVERALL; Overall Length: 6.260 INCHES MINIMUM AND 6.760 INCHES MAXIMUM IN; Material: STEEL OVERALL. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-773-8026 still in active supply?

NSN 5120-00-773-8026 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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