PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S77ARatchet Attachment,socket Wrench

Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc · NSN 5120-01-335-1081 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-335-1081 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-335-1081. Primary manufacturer part number: S77A.
Features
  • Ratchet Attachment,socket Wrench — FSC 5120
  • Style Designator: EXTERNAL-INTERNAL
  • Drive Surface Size: 0.500 INCHES NOMINAL BOTH ENDS IN
  • Material: STEEL OVERALL
  • Drive End Shape: SQUARE FIRST END INTERNAL
  • Nondefinitive Spec/std Data: 2 TYPE AND 3 CLASS AND B STYLE
  • Surface Treatment: CHROMIUM OVERALL
  • Specification/standard Data: 05047-AMSE B107.110 CAT 10 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Applications
  • Applications requiring Steel Overall construction
General Description

The Ratchet Attachment,socket Wrench, cataloged under National Stock Number 5120-01-335-1081, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-335-1081
Primary Part NumberS77A
Item NameRatchet Attachment,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerIdsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
StatusACTIVE
Style DesignatorEXTERNAL-INTERNAL
Drive Surface Size0.500 INCHES NOMINAL BOTH ENDS IN
MaterialSTEEL OVERALL
Drive End ShapeSQUARE FIRST END INTERNAL
Nondefinitive Spec/std Data2 TYPE AND 3 CLASS AND B STYLE
Surface TreatmentCHROMIUM OVERALL
Specification/standard Data05047-AMSE B107.110 CAT 10 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Drive End ShapeSQUARE SECOND END EXTERNAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2040-00-012-3713S77A INTERCHANGEABLE
Cylinder,strainer
Gross Mechanical Laboratories Inc
1377-00-038-5182 INTERCHANGEABLE
Squib,electric
6240-00-155-8717 INTERCHANGEABLE
Lamp,incandescent
5120-00-227-8129 INTERCHANGEABLE
Ratchet Attachment,socket Wrench
5120-00-243-7322 INTERCHANGEABLE
Ratchet Attachment,socket Wrench
5120-00-243-7323 INTERCHANGEABLE
Ratchet Attachment,socket Wrench
5120-00-277-1207 INTERCHANGEABLE
Ratchet Attachment,socket Wrench
2040-00-385-8944M13025 INTERCHANGEABLE
Cylinder
Gross Mechanical Laboratories Inc
2590-00-414-56199102036 INTERCHANGEABLE
Cap,filler Opening
Sicard a Division of Smi-Snowblast Inc Dba Sicard
4730-00-424-5872182-176 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Dresser Industries Inc Leroi Div
Cross-Reference Index
Part NumberManufacturer
B107.10 TY2CL3STB General Services Administration Federal Supply Service (USA)
S67 Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
B107.10 The American Society of Mechanical Engineers (USA)
S77 Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
S77A PRIMARY Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
5120PL1328960 Jednolity Indeks Materialowy - Uniform Material Index (POL)
B107.110 The American Society of Mechanical Engineers (USA)
B107.110 CAT 10 TY2CL3STB General Services Administration Federal Supply Service (USA)
Related Parts
2040-00-012-3713INTERCHANGEABLE
CYLINDER,STRAINER
S77A
1377-00-038-5182INTERCHANGEABLE
SQUIB,ELECTRIC
6240-00-155-8717INTERCHANGEABLE
LAMP,INCANDESCENT
5120-00-227-8129INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
5120-00-243-7322INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
5120-00-243-7323INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
5120-00-277-1207INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
2040-00-385-8944INTERCHANGEABLE
CYLINDER
M13025
2590-00-414-5619INTERCHANGEABLE
CAP,FILLER OPENING
9102036
4730-00-424-5872INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
182-176
5331-00-551-9116INTERCHANGEABLE
O-RING
155-685
5340-00-843-4088INTERCHANGEABLE
PLUNGER,QUICK RELEASE
9177432

Frequently Asked Questions

What is NSN 5120-01-335-1081?

NSN 5120-01-335-1081 is a Ratchet Attachment,socket Wrench, manufactured by Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-335-1081?

NSN 5120-01-335-1081 has 8 cross-referenced part numbers: B107.10 TY2CL3STB (General Services Administration Federal Supply Service), S67 (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc), B107.10 (The American Society of Mechanical Engineers), S77 (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc), S77A (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc) and 3 more.

What NSN replaces 5120-01-335-1081?

There are 12 known substitutes for 5120-01-335-1081: 2040-00-012-3713, 1377-00-038-5182, 6240-00-155-8717 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S77A?

Key specifications for S77A: Style Designator: EXTERNAL-INTERNAL; Drive Surface Size: 0.500 INCHES NOMINAL BOTH ENDS IN; Material: STEEL OVERALL; Drive End Shape: SQUARE FIRST END INTERNAL. 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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