PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

F1240-010Washer,spring Tension

Barnes Group Inc. Dba Associated Spring Div Associated Spring Bristol · NSN 5310-00-997-1914 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-997-1914 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-997-1914. Primary manufacturer part number: F1240-010.
Features
  • Washer,spring Tension — FSC 5310
  • Outside Diameter: 1.235 INCHES MINIMUM AND 1.235 INCHES MINIMUM AND 1.245 INCHES MAXIMUM1.245 INCHES MAXIMUM IN
  • Hole Diameter: 0.683 INCHES MINIMUM AND 0.683 INCHES MINIMUM AND 0.693 INCHES MAXIMUM0.693 INCHES MAXIMUM IN
  • Material: STEEL COMP 1074 OVERALL
  • Material Thickness: 0.024 INCHES NOMINAL0.024 INCHES NOMINAL IN
  • Style Designator: SPRING TENSION
  • Material Document and Classification: ASTM A682 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • 5 verified cross-references
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 5310-00-997-1914, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Barnes Group Inc. Dba Associated Spring Div Associated Spring Bristol. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-997-1914
Primary Part NumberF1240-010
Item NameWasher,spring Tension
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerBarnes Group Inc. Dba Associated Spring Div Associated Spring Bristol
StatusCANCELLED
Outside Diameter1.235 INCHES MINIMUM AND 1.235 INCHES MINIMUM AND 1.245 INCHES MAXIMUM1.245 INCHES MAXIMUM IN
Hole Diameter0.683 INCHES MINIMUM AND 0.683 INCHES MINIMUM AND 0.693 INCHES MAXIMUM0.693 INCHES MAXIMUM IN
MaterialSTEEL COMP 1074 OVERALL
Material Thickness0.024 INCHES NOMINAL0.024 INCHES NOMINAL IN
Style DesignatorSPRING TENSION
Material Document and ClassificationASTM A682 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5935-00-248-4734S12B INTERCHANGEABLE
Jack
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5330-00-857-393563X7197T2 INTERCHANGEABLE
Seal,plain Encased
Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc
5935-00-889-7895S12B INTERCHANGEABLE
Jack,telephone
Switchcraft Inc.
6240-01-504-64417052-100-B INTERCHANGEABLE
Sign,exit
Jessup Manufacturing Company
Cross-Reference Index
Part NumberManufacturer
610070P13 Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems (USA)
7012B Barnes Group Inc. Dba Associated Spring Div Associated Spring Bristol (USA)
F1240-010 PRIMARY Barnes Group Inc. Dba Associated Spring Div Associated Spring Bristol (USA)
S12B Barnes Group Inc. Dba Associated Spring Div Associated Spring Bristol (USA)
BL3684 Breeze-Eastern Llc (USA)
Related Parts
5935-00-248-4734INTERCHANGEABLE
JACK
S12B
5330-00-857-3935INTERCHANGEABLE
SEAL,PLAIN ENCASED
63X7197T2
5935-00-889-7895INTERCHANGEABLE
JACK,TELEPHONE
S12B
6240-01-504-6441INTERCHANGEABLE
SIGN,EXIT
7052-100-B

Frequently Asked Questions

What is NSN 5310-00-997-1914?

NSN 5310-00-997-1914 is a Washer,spring Tension, manufactured by Barnes Group Inc. Dba Associated Spring Div Associated Spring Bristol, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-997-1914?

NSN 5310-00-997-1914 has 5 cross-referenced part numbers: 610070P13 (Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems), 7012B (Barnes Group Inc. Dba Associated Spring Div Associated Spring Bristol), F1240-010 (Barnes Group Inc. Dba Associated Spring Div Associated Spring Bristol), S12B (Barnes Group Inc. Dba Associated Spring Div Associated Spring Bristol), BL3684 (Breeze-Eastern Llc).

What NSN replaces 5310-00-997-1914?

There are 4 known substitutes for 5310-00-997-1914: 5935-00-248-4734, 5330-00-857-3935, 5935-00-889-7895 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of F1240-010?

Key specifications for F1240-010: Outside Diameter: 1.235 INCHES MINIMUM AND 1.235 INCHES MINIMUM AND 1.245 INCHES MAXIMUM1.245 INCHES MAXIMUM IN; Hole Diameter: 0.683 INCHES MINIMUM AND 0.683 INCHES MINIMUM AND 0.693 INCHES MAXIMUM0.693 INCHES MAXIMUM IN; Material: STEEL COMP 1074 OVERALL; Material Thickness: 0.024 INCHES NOMINAL0.024 INCHES NOMINAL IN. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-997-1914 still in active supply?

NSN 5310-00-997-1914 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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