PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

70700-20210-101Wrench,box

Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp · NSN 5120-01-105-2029 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-105-2029 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-105-2029. Primary manufacturer part number: 70700-20210-101.
Features
  • Wrench,box — FSC 5120
  • Wrenching Surface Size: 1.078 INCHES NOMINAL FIRST END IN
  • Drive End Shape: SQUARE SECOND END INTERNAL
  • Style Designator: STRAIGHT SINGLE HEAD
  • Surface Treatment Document and Classification: QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Surface Treatment: NICKEL OR PHOSPHATE OR OXIDE OVERALL
  • Wrenching Surface Shape: 12 POINT FIRST END INTERNAL
  • Drive Surface Size: 0.503 INCHES MINIMUM AND 0.511 INCHES MAXIMUM SECOND END IN
Applications
  • Applications requiring Steel Comp 4340 Overall construction
General Description

The Wrench,box, cataloged under National Stock Number 5120-01-105-2029, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 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
NSN5120-01-105-2029
Primary Part Number70700-20210-101
Item NameWrench,box
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerSikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
StatusACTIVE
Wrenching Surface Size1.078 INCHES NOMINAL FIRST END IN
Drive End ShapeSQUARE SECOND END INTERNAL
Style DesignatorSTRAIGHT SINGLE HEAD
Surface Treatment Document and ClassificationQQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Surface TreatmentNICKEL OR PHOSPHATE OR OXIDE OVERALL
Wrenching Surface Shape12 POINT FIRST END INTERNAL
Drive Surface Size0.503 INCHES MINIMUM AND 0.511 INCHES MAXIMUM SECOND END IN
MaterialSTEEL COMP 4340 OVERALL
Material Document and ClassificationMIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5935-00-170-81398169230 INTERCHANGEABLE
Connector,plug,electrical
Us Army Aviation and Missile Command
3110-00-198-2318905505 INTERCHANGEABLE
Bearing,ball,annular
General Motors Corp
1620-00-830-79905505 INTERCHANGEABLE
Sleeve,roller
Goodrich Aerospace Canada Ltd
6625-00-891-3298526-7727-005 INTERCHANGEABLE
Time Signal Set
Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems
4920-00-922-31435505 INTERCHANGEABLE
Spring Balance
Central Scientific Co Educational
9340-00-922-5319550-5-3 INTERCHANGEABLE
Window,observation
Tobeyco Mfg, Co, Inc. Div Federal Brass Mfg.
6680-00-985-4992CS3005-245900 INTERCHANGEABLE
Indicator,sight,liquid
Ldi Industries, Inc. Dba Ldi Industries Inc
5995-01-045-37755505 INTERCHANGEABLE
Cord Assembly,electrical
Purdy William J Co Interfan Div
6680-01-099-48357-486-000628 INTERCHANGEABLE
Indicator,sight,liquid
Grove U.s. Llc Dba Grove Us Llc
6515-01-272-45115505 INTERCHANGEABLE
Dilator,esophageal
Boston Scientific Corp Microvasive Div
Cross-Reference Index
Part NumberManufacturer
70700-20210-101 PRIMARY Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA)
5505 PRIMARY Huntington Partners, Inc. Dba Continental Tool & Mfg. (USA)
CTM5505 Huntington Partners, Inc. Dba Continental Tool & Mfg. (USA)
Related Parts
5935-00-170-8139INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
8169230
3110-00-198-2318INTERCHANGEABLE
BEARING,BALL,ANNULAR
905505
1620-00-830-7990INTERCHANGEABLE
SLEEVE,ROLLER
5505
6625-00-891-3298INTERCHANGEABLE
TIME SIGNAL SET
526-7727-005
4920-00-922-3143INTERCHANGEABLE
SPRING BALANCE
5505
9340-00-922-5319INTERCHANGEABLE
WINDOW,OBSERVATION
550-5-3
6680-00-985-4992INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
CS3005-245900
5995-01-045-3775INTERCHANGEABLE
CORD ASSEMBLY,ELECTRICAL
5505
6680-01-099-4835INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
7-486-000628
6515-01-272-4511INTERCHANGEABLE
DILATOR,ESOPHAGEAL
5505
4730-01-294-8793INTERCHANGEABLE
COUPLING HALF,SELF-SEALING
5505-10-12
5995-01-370-5988INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
717751106-009

Frequently Asked Questions

What is NSN 5120-01-105-2029?

NSN 5120-01-105-2029 is a Wrench,box, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-105-2029?

NSN 5120-01-105-2029 has 3 cross-referenced part numbers: 70700-20210-101 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 5505 (Huntington Partners, Inc. Dba Continental Tool & Mfg.), CTM5505 (Huntington Partners, Inc. Dba Continental Tool & Mfg.).

What NSN replaces 5120-01-105-2029?

There are 12 known substitutes for 5120-01-105-2029: 5935-00-170-8139, 3110-00-198-2318, 1620-00-830-7990 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 70700-20210-101?

Key specifications for 70700-20210-101: Wrenching Surface Size: 1.078 INCHES NOMINAL FIRST END IN; Drive End Shape: SQUARE SECOND END INTERNAL; Style Designator: STRAIGHT SINGLE HEAD; Surface Treatment Document and Classification: QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 11 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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