PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

K18Washer,flat

Parker Hannifin Corp Dba Pneutronics Div Aerospace Filtration Division · NSN 5310-01-631-0010 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-631-0010 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-631-0010. Primary manufacturer part number: K18.
Features
  • Washer,flat — FSC 5310
  • 1 verified cross-reference
  • Primary manufacturer: Parker Hannifin Corp Dba Pneutronics Div Aerospace Filtration Division
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-631-0010, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Parker Hannifin Corp Dba Pneutronics Div Aerospace Filtration Division. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameWasher,flat
FSC / FSG5310 — No Item Name Available (FSG 53)
ManufacturersParker Hannifin Corp Dba Pneutronics Div Aerospace Filtration Division (CAGE 13573)
Technical Specifications
ParameterValue
NSN5310-01-631-0010
Primary Part NumberK18
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerParker Hannifin Corp Dba Pneutronics Div Aerospace Filtration Division
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
3120-00-343-056221-400 INTERCHANGEABLE
Bearing,sleeve
Rix Industries
5120-00-348-7652K18 INTERCHANGEABLE
Contact Positioner,terminal Crim
Daniels Manufacturing Corporation
5945-00-510-0550 INTERCHANGEABLE
Relay,electromagnetic
5120-00-541-180804-M-1/8 INTERCHANGEABLE
Holder,sheet Metal,hole
Us Air Tool Co., Inc.
4720-00-676-79362556-6 INTERCHANGEABLE
Hose,nonmetallic
Danfoss Power Solutions II, Llc
5305-00-882-0821K18 INTERCHANGEABLE
Screw,shoulder
Arriflex Corp
5120-01-023-6511K-1/8 INTERCHANGEABLE
Holder,sheet Metal,hole
Zephyr Manufacturing Co., Inc. Dba Zephyr Manufacturing Co Inc
4730-01-252-7428K1-8 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Allied Refrigeration Inc Dba Allied Refrigeration Inc Div Signal Hill
5315-01-364-0838 INTERCHANGEABLE
Key,woodruff
Cross-Reference Index
Part NumberManufacturer
K18 PRIMARY Parker Hannifin Corp Dba Pneutronics Div Aerospace Filtration Division (USA)
Related Parts
3120-00-343-0562INTERCHANGEABLE
BEARING,SLEEVE
21-400
5120-00-348-7652INTERCHANGEABLE
CONTACT POSITIONER,TERMINAL CRIM
K18
5945-00-510-0550INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5120-00-541-1808INTERCHANGEABLE
HOLDER,SHEET METAL,HOLE
04-M-1/8
4720-00-676-7936INTERCHANGEABLE
HOSE,NONMETALLIC
2556-6
5305-00-882-0821INTERCHANGEABLE
SCREW,SHOULDER
K18
5120-01-023-6511INTERCHANGEABLE
HOLDER,SHEET METAL,HOLE
K-1/8
4730-01-252-7428INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
K1-8
5315-01-364-0838INTERCHANGEABLE
KEY,WOODRUFF

Frequently Asked Questions

What is NSN 5310-01-631-0010?

NSN 5310-01-631-0010 is a Washer,flat, manufactured by Parker Hannifin Corp Dba Pneutronics Div Aerospace Filtration Division, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-631-0010?

NSN 5310-01-631-0010 has 1 cross-referenced part number: K18 (Parker Hannifin Corp Dba Pneutronics Div Aerospace Filtration Division).

What NSN replaces 5310-01-631-0010?

There are 9 known substitutes for 5310-01-631-0010: 3120-00-343-0562, 5120-00-348-7652, 5945-00-510-0550 and 6 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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