PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

Z9Washer,spring Tension

E. C. Styberg Engineering Company Dba Ec Styberg Engineering Co Inc Div E.c. Styberg Engineering Co. · NSN 5310-01-641-3760 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-641-3760 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-641-3760. Primary manufacturer part number: Z9.
Features
  • Washer,spring Tension — FSC 5310
  • Hole Diameter: 0.372 INCHES MINIMUM AND 0.392 INCHES MAXIMUM IN
  • Material Thickness: 0.033 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
  • Outside Diameter: 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
  • Material: STEEL OVERALL
  • Style Designator: SPRING TENSION
  • 3 verified cross-references
  • Primary manufacturer: E. C. Styberg Engineering Company Dba Ec Styberg Engineering Co Inc Div E.c. Styberg Engineering Co.
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Mechanical energy storage
  • Vibration dampening
General Description

The Washer,spring Tension, cataloged under National Stock Number 5310-01-641-3760, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is E. C. Styberg Engineering Company Dba Ec Styberg Engineering Co Inc Div E.c. Styberg Engineering Co.. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-641-3760
Primary Part NumberZ9
Item NameWasher,spring Tension
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerE. C. Styberg Engineering Company Dba Ec Styberg Engineering Co Inc Div E.c. Styberg Engineering Co.
StatusACTIVE
Hole Diameter0.372 INCHES MINIMUM AND 0.392 INCHES MAXIMUM IN
Material Thickness0.033 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
Outside Diameter0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Style DesignatorSPRING TENSION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5310-00-116-409611014595 INTERCHANGEABLE
Washer,spring Tension
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
4320-00-148-6794Z9 INTERCHANGEABLE
Shaft,transmission,pump
Curtiss-Wright Electro-Mechanical Corporation Div Epd
3442-00-430-359065542 INTERCHANGEABLE
Spreader,plunger to
Applied Power Inc Power Packer
5360-00-469-6311 INTERCHANGEABLE
Spring
6135-00-812-9039ZM9 INTERCHANGEABLE
Battery,nonrechargeable
Yosemite Investment Inc Dba North American Capacitor Co
6135-00-985-7845003-360013R00 INTERCHANGEABLE
Battery,nonrechargeable
Insitu, Inc.
Cross-Reference Index
Part NumberManufacturer
Z9 PRIMARY E. C. Styberg Engineering Company Dba Ec Styberg Engineering Co Inc Div E.c. Styberg Engineering Co. (USA)
6098666-001 Naval Sea Systems Command (USA)
BS 3/4-3/8-0.9 PRIMARY Bearing Engineers Inc Dba Motion Solutions (USA)
Related Parts
5310-00-116-4096INTERCHANGEABLE
WASHER,SPRING TENSION
11014595
4320-00-148-6794INTERCHANGEABLE
SHAFT,TRANSMISSION,PUMP
Z9
3442-00-430-3590INTERCHANGEABLE
SPREADER,PLUNGER TO
65542
5360-00-469-6311INTERCHANGEABLE
SPRING
6135-00-812-9039INTERCHANGEABLE
BATTERY,NONRECHARGEABLE
ZM9
6135-00-985-7845INTERCHANGEABLE
BATTERY,NONRECHARGEABLE
003-360013R00

Frequently Asked Questions

What is NSN 5310-01-641-3760?

NSN 5310-01-641-3760 is a Washer,spring Tension, manufactured by E. C. Styberg Engineering Company Dba Ec Styberg Engineering Co Inc Div E.c. Styberg Engineering Co., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-641-3760?

NSN 5310-01-641-3760 has 3 cross-referenced part numbers: Z9 (E. C. Styberg Engineering Company Dba Ec Styberg Engineering Co Inc Div E.c. Styberg Engineering Co.), 6098666-001 (Naval Sea Systems Command), BS 3/4-3/8-0.9 (Bearing Engineers Inc Dba Motion Solutions).

What NSN replaces 5310-01-641-3760?

There are 6 known substitutes for 5310-01-641-3760: 5310-00-116-4096, 4320-00-148-6794, 3442-00-430-3590 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of Z9?

Key specifications for Z9: Hole Diameter: 0.372 INCHES MINIMUM AND 0.392 INCHES MAXIMUM IN; Material Thickness: 0.033 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN; Overall Height: 0.055 INCHES MINIMUM AND 0.061 INCHES MAXIMUM IN; Outside Diameter: 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN. 6 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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