PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

59966R1Seat,helical Compression Spring

Navistar Intl Corp Truck Br Ohio Plant · NSN 5340-00-374-9346 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-374-9346 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-374-9346. Primary manufacturer part number: 59966R1.
Features
  • Seat,helical Compression Spring — FSC 5340
  • Counterbore Diameter: 0.9280 INCHES MINIMUM AND 0.9480 INCHES MAXIMUM IN
  • Second Step Diameter: 1.4020 INCHES MINIMUM AND 1.4180 INCHES MAXIMUM IN
  • Countersink Diameter: 0.5640 INCHES MINIMUM AND 0.5840 INCHES MAXIMUM IN
  • Features Provided: CASEHARDENED
  • Style Designator: SEAT
  • Distance From End to First Step: 0.2690 INCHES MINIMUM AND 0.3490 INCHES MAXIMUM IN
  • Second Counterbore Diameter: 0.9375 INCHES NOMINAL IN
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Steel construction
General Description

The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-374-9346, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Navistar Intl Corp Truck Br Ohio Plant. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5340-00-374-9346
Primary Part Number59966R1
Item NameSeat,helical Compression Spring
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerNavistar Intl Corp Truck Br Ohio Plant
StatusCANCELLED
Counterbore Diameter0.9280 INCHES MINIMUM AND 0.9480 INCHES MAXIMUM IN
Second Step Diameter1.4020 INCHES MINIMUM AND 1.4180 INCHES MAXIMUM IN
Countersink Diameter0.5640 INCHES MINIMUM AND 0.5840 INCHES MAXIMUM IN
Features ProvidedCASEHARDENED
Style DesignatorSEAT
Distance From End to First Step0.2690 INCHES MINIMUM AND 0.3490 INCHES MAXIMUM IN
Second Counterbore Diameter0.9375 INCHES NOMINAL IN
Counterbore Length0.3750 INCHES NOMINAL IN
Second Counterbore Length0.1875 INCHES NOMINAL IN
End Diameter0.7810 INCHES MINIMUM AND 0.7910 INCHES MAXIMUM IN
Design TypeSOLID
MaterialSTEEL
First Step Diameter1.0990 INCHES MINIMUM AND 1.1090 INCHES MAXIMUM IN
First Step Length0.0680 INCHES MINIMUM AND 0.0880 INCHES MAXIMUM IN
Countersink Angle in Deg7.0
Bore Diameter0.4340 INCHES MINIMUM AND 0.4440 INCHES MAXIMUM IN
Chamfer Angle in Deg11.0
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5360-00-386-3350 INTERCHANGEABLE
Spring,helical,compression
7050-01-525-5784SR216 INTERCHANGEABLE
Computer Subassembly
Linksys Group Inc
Cross-Reference Index
Part NumberManufacturer
VS371 Spx Corp (USA)
RR9 Dana Corp Engine Products Div (USA)
SR216 Toledo Pickling & Steel Sales (USA)
59966R1 Navistar International Corporation Dba Navistar (USA)
7373515 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
1N59966R1 Fwd Seagrave Holdings Lp (USA)
VS371 Bosch Automotive Service Solutions Inc. (USA)
59966R1 PRIMARY Navistar Intl Corp Truck Br Ohio Plant (USA)
BEX4617 Eaton Corp Dba Eaton Aerospace Jackson (USA)
SR216 Eaton Corp Dba Eaton Aerospace Jackson (USA)
Related Parts
5360-00-386-3350INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
7050-01-525-5784INTERCHANGEABLE
COMPUTER SUBASSEMBLY
SR216

Frequently Asked Questions

What is NSN 5340-00-374-9346?

NSN 5340-00-374-9346 is a Seat,helical Compression Spring, manufactured by Navistar Intl Corp Truck Br Ohio Plant, classified under FSC 5340 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5340-00-374-9346?

NSN 5340-00-374-9346 has 10 cross-referenced part numbers: VS371 (Spx Corp), RR9 (Dana Corp Engine Products Div), SR216 (Toledo Pickling & Steel Sales), 59966R1 (Navistar International Corporation Dba Navistar), 7373515 (U S Army Tank Automotive Command Amsta-Im-Mm) and 5 more.

What NSN replaces 5340-00-374-9346?

There are 2 known substitutes for 5340-00-374-9346: 5360-00-386-3350, 7050-01-525-5784. Verify interchangeability with system specifications before substitution.

What are the specifications of 59966R1?

Key specifications for 59966R1: Counterbore Diameter: 0.9280 INCHES MINIMUM AND 0.9480 INCHES MAXIMUM IN; Second Step Diameter: 1.4020 INCHES MINIMUM AND 1.4180 INCHES MAXIMUM IN; Countersink Diameter: 0.5640 INCHES MINIMUM AND 0.5840 INCHES MAXIMUM IN; Special Features: MATL-STEEL QQ-S-633,C1010 TO C1022. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5340-00-374-9346 still in active supply?

NSN 5340-00-374-9346 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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