PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

341388Washer,flat

Sprengnether Instruments Inc. Iners Incorporated · NSN 5310-00-618-6270 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-618-6270 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-618-6270. Primary manufacturer part number: 341388.
Features
  • Washer,flat — FSC 5310
  • Hole Diameter: 0.552 INCHES MINIMUM AND 0.582 INCHES MAXIMUM IN
  • Peripheral Shape Style: ROUND
  • Material Document and Classification: MIL-S-6855,CL 2,GR 60 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Material: RUBBER SYNTHETIC OVERALL
  • Cross-Sectional Shape Style: RECTANGULAR
  • Hardness Rating: 60.0 DUROMETER NOMINAL
  • Overall Diameter: 0.875 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Rubber Synthetic Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-618-6270, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Sprengnether Instruments Inc. Iners Incorporated. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 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
NSN5310-00-618-6270
Primary Part Number341388
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerSprengnether Instruments Inc. Iners Incorporated
StatusCANCELLED
Hole Diameter0.552 INCHES MINIMUM AND 0.582 INCHES MAXIMUM IN
Peripheral Shape StyleROUND
Material Document and ClassificationMIL-S-6855,CL 2,GR 60 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MaterialRUBBER SYNTHETIC OVERALL
Cross-Sectional Shape StyleRECTANGULAR
Hardness Rating60.0 DUROMETER NOMINAL
Overall Diameter0.875 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Thickness0.015 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5905-00-721-3739 INTERCHANGEABLE
Resistor,fixed,film
5355-01-054-5998341388 INTERCHANGEABLE
Knob
Fluke Corp
Cross-Reference Index
Part NumberManufacturer
341388 Sprengnether Instruments Inc. Iners Incorporated (USA)
1855613 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
5905-00-721-3739INTERCHANGEABLE
RESISTOR,FIXED,FILM
5355-01-054-5998INTERCHANGEABLE
KNOB
341388

Frequently Asked Questions

What is NSN 5310-00-618-6270?

NSN 5310-00-618-6270 is a Washer,flat, manufactured by Sprengnether Instruments Inc. Iners Incorporated, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-618-6270?

NSN 5310-00-618-6270 has 2 cross-referenced part numbers: 341388 (Sprengnether Instruments Inc. Iners Incorporated), 1855613 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 5310-00-618-6270?

There are 2 known substitutes for 5310-00-618-6270: 5905-00-721-3739, 5355-01-054-5998. Verify interchangeability with system specifications before substitution.

What are the specifications of 341388?

Key specifications for 341388: Hole Diameter: 0.552 INCHES MINIMUM AND 0.582 INCHES MAXIMUM IN; Peripheral Shape Style: ROUND; Material Document and Classification: MIL-S-6855,CL 2,GR 60 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Material: RUBBER SYNTHETIC OVERALL. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-618-6270 still in active supply?

NSN 5310-00-618-6270 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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