PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

121951Key,machine

Hdt Expeditionary Systems Inc · NSN 5315-00-705-2359 · FSC 5315 · No Item Name Available
Verified by PartsTable
NSN 5315-00-705-2359 — this item is cataloged by the U.S. Government under National Stock Number 5315-00-705-2359. Primary manufacturer part number: 121951.
Features
  • Key,machine — FSC 5315
  • Material: STEEL COMP 1010 OR STEEL COMP 1012 OR STEEL COMP 1015 OVERALL
  • Material Document and Classification: SAE ASSN STD ALL MATERIAL RESPONSES OVERALL
  • Starting Edge Shape: STRAIGHT
  • Radius: 1.000 INCHES NOMINAL IN
  • 4 verified cross-references
  • Primary manufacturer: Hdt Expeditionary Systems Inc
Applications
  • Applications requiring Steel Comp 1010 or Steel Comp 1012 or Steel Comp 1015 Overall construction
General Description

The Key,machine, cataloged under National Stock Number 5315-00-705-2359, is classified within Federal Supply Class 5315 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hdt Expeditionary Systems Inc. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5315-00-705-2359
Primary Part Number121951
Item NameKey,machine
FSC / FSG5315 / 53 — No Item Name Available
ManufacturerHdt Expeditionary Systems Inc
StatusACTIVE
MaterialSTEEL COMP 1010 OR STEEL COMP 1012 OR STEEL COMP 1015 OVERALL
Material Document and ClassificationSAE ASSN STD ALL MATERIAL RESPONSES OVERALL
Starting Edge ShapeSTRAIGHT
Radius1.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5307-00-208-8142 INTERCHANGEABLE
Stud,continuous Thread
5330-00-291-1955C131-5 INTERCHANGEABLE
Retainer,packing
Mack Trucks Inc Parts Opn
5360-01-263-4232 INTERCHANGEABLE
Spring,helical,compression
6105-01-531-3190121951 INTERCHANGEABLE
Motor,control
Sea Tel, Inc. Dba Cobham Satcom Div Cobham Satcom
9150-01-723-6813121951 INTERCHANGEABLE
Grease,utility
Exxon Mobil Corporation Div Exxonmobil Fuels & Lubricants Company
Cross-Reference Index
Part NumberManufacturer
121951 Engineered Air Systems, Inc. Dba Drs Sustainment Systems (USA)
121951 Drs Environmental Systems Inc (USA)
121951 Sundstrand Corp Sundstrand Hydraulics Div (USA)
121951 PRIMARY Hdt Expeditionary Systems Inc (USA)
Related Parts
5307-00-208-8142INTERCHANGEABLE
STUD,CONTINUOUS THREAD
5330-00-291-1955INTERCHANGEABLE
RETAINER,PACKING
C131-5
5360-01-263-4232INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
6105-01-531-3190INTERCHANGEABLE
MOTOR,CONTROL
121951
9150-01-723-6813INTERCHANGEABLE
GREASE,UTILITY
121951

Frequently Asked Questions

What is NSN 5315-00-705-2359?

NSN 5315-00-705-2359 is a Key,machine, manufactured by Hdt Expeditionary Systems Inc, classified under FSC 5315 (No Item Name Available). Status: active.

What are the part numbers for NSN 5315-00-705-2359?

NSN 5315-00-705-2359 has 4 cross-referenced part numbers: 121951 (Engineered Air Systems, Inc. Dba Drs Sustainment Systems), 121951 (Drs Environmental Systems Inc), 121951 (Sundstrand Corp Sundstrand Hydraulics Div), 121951 (Hdt Expeditionary Systems Inc).

What NSN replaces 5315-00-705-2359?

There are 5 known substitutes for 5315-00-705-2359: 5307-00-208-8142, 5330-00-291-1955, 5360-01-263-4232 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 121951?

Key specifications for 121951: Overall Width: 0.437 INCHES NOMINAL IN; Material: STEEL COMP 1010 OR STEEL COMP 1012 OR STEEL COMP 1015 OVERALL; Material Document and Classification: SAE ASSN STD ALL MATERIAL RESPONSES OVERALL; Overall Height: 0.094 INCHES NOMINAL IN. 7 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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