PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

F77ARatchet Attachment,socket Wrench

Sna Germany Gmbh · NSN 5120-00-227-8129 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-227-8129 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-227-8129. Primary manufacturer part number: F77A.
Features
  • Ratchet Attachment,socket Wrench — FSC 5120
  • Nondefinitive Spec/std Data: 2 TYPE AND 3 CLASS AND B STYLE
  • Style Designator: EXTERNAL-INTERNAL
  • Material: STEEL OVERALL
  • Drive End Shape: SQUARE SECOND END INTERNAL
  • Drive End Shape: SQUARE FIRST END EXTERNAL
  • Features Provided: REVERSIBLE RATCHET
  • Specification/standard Data: 05047-ASME B107 CAT 10 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Applications
  • Applications requiring Steel Overall construction
General Description

The Ratchet Attachment,socket Wrench, cataloged under National Stock Number 5120-00-227-8129, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Sna Germany Gmbh. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-00-227-8129
Primary Part NumberF77A
Item NameRatchet Attachment,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerSna Germany Gmbh
StatusCANCELLED
Nondefinitive Spec/std Data2 TYPE AND 3 CLASS AND B STYLE
Style DesignatorEXTERNAL-INTERNAL
MaterialSTEEL OVERALL
Drive End ShapeSQUARE SECOND END INTERNAL
Drive End ShapeSQUARE FIRST END EXTERNAL
Features ProvidedREVERSIBLE RATCHET
Specification/standard Data05047-ASME B107 CAT 10 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Drive Surface Size0.375 INCHES NOMINAL BOTH ENDS IN
Surface TreatmentCHROMIUM OVERALL
Outside Diameter1.437 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5120-00-243-7322 INTERCHANGEABLE
Ratchet Attachment,socket Wrench
5120-00-243-7323 INTERCHANGEABLE
Ratchet Attachment,socket Wrench
5120-00-243-7324 INTERCHANGEABLE
Ratchet Attachment,socket Wrench
5120-00-277-1207 INTERCHANGEABLE
Ratchet Attachment,socket Wrench
5120-01-334-9859 INTERCHANGEABLE
Ratchet Attachment,socket Wrench
5120-01-334-9872 INTERCHANGEABLE
Ratchet Attachment,socket Wrench
5120-01-335-1081S77A INTERCHANGEABLE
Ratchet Attachment,socket Wrench
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-01-335-1082 INTERCHANGEABLE
Ratchet Attachment,socket Wrench
5120-01-335-1086 INTERCHANGEABLE
Ratchet Attachment,socket Wrench
5120-01-350-1015TMR860 INTERCHANGEABLE
Ratchet Attachment,socket Wrench
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
Cross-Reference Index
Part NumberManufacturer
F77A Sna Germany Gmbh (DEU)
B107.110 The American Society of Mechanical Engineers (USA)
5120PL1328489 Jednolity Indeks Materialowy - Uniform Material Index (POL)
GGG-W-641 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
A-A-2173 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
B107.10 The American Society of Mechanical Engineers (USA)
B107.110 CAT 10 TY2CL3STB General Services Administration Federal Supply Service (USA)
F67B Sna Germany Gmbh (DEU)
B107.10 TY2CL3STB General Services Administration Federal Supply Service (USA)
Related Parts
5120-00-243-7322INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
5120-00-243-7323INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
5120-00-243-7324INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
5120-00-277-1207INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
5120-01-334-9859INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
5120-01-334-9872INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
5120-01-335-1081INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
S77A
5120-01-335-1082INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
5120-01-335-1086INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
5120-01-350-1015INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
TMR860
5120-01-355-1900INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
L672B
5120-01-399-9668INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
J5447

Frequently Asked Questions

What is NSN 5120-00-227-8129?

NSN 5120-00-227-8129 is a Ratchet Attachment,socket Wrench, manufactured by Sna Germany Gmbh, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-227-8129?

NSN 5120-00-227-8129 has 9 cross-referenced part numbers: F77A (Sna Germany Gmbh), B107.110 (The American Society of Mechanical Engineers), 5120PL1328489 (Jednolity Indeks Materialowy - Uniform Material Index), GGG-W-641 (Federal Specifications Promulgated by General Services Administration Washington DC), A-A-2173 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC) and 4 more.

What NSN replaces 5120-00-227-8129?

There are 12 known substitutes for 5120-00-227-8129: 5120-00-243-7322, 5120-00-243-7323, 5120-00-243-7324 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of F77A?

Key specifications for F77A: Nondefinitive Spec/std Data: 2 TYPE AND 3 CLASS AND B STYLE; Style Designator: EXTERNAL-INTERNAL; Material: STEEL OVERALL; Drive End Shape: SQUARE SECOND END INTERNAL. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-227-8129 still in active supply?

NSN 5120-00-227-8129 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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