PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet
MRO / Aircraft Components and Accessories / 1620-00-445-2581

8663Check Valve Assy

Haskel International, Llc Dba Haskel International, Llc · NSN 1620-00-445-2581 · FSC 1620 · No Item Name Available
Verified by PartsTable
NSN 1620-00-445-2581 — this item is cataloged by the U.S. Government under National Stock Number 1620-00-445-2581. Primary manufacturer part number: 8663.
MRO FSG 16 NO ITEM NAME AVAILABLE Technical Drawing
1620-00-445-2581 — No Item Name Available illustration
Features
  • Check Valve Assy — FSC 1620
  • 1 verified cross-reference
  • Primary manufacturer: Haskel International, Llc Dba Haskel International, Llc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Check Valve Assy, cataloged under National Stock Number 1620-00-445-2581, is classified within Federal Supply Class 1620 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Haskel International, Llc Dba Haskel International, Llc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameCheck Valve Assy
FSC / FSG1620 — No Item Name Available (FSG 16)
ManufacturersHaskel International, Llc Dba Haskel International, Llc (CAGE 81400)
Technical Specifications
ParameterValue
NSN1620-00-445-2581
Primary Part Number8663
Item NameCheck Valve Assy
FSC / FSG1620 / 16 — No Item Name Available
ManufacturerHaskel International, Llc Dba Haskel International, Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
⇄ Verified Substitutes 12
4730-00-270-3890 INTERCHANGEABLE
Nut,slip Joint
2910-00-374-3556 INTERCHANGEABLE
Pump,fuel,cam Actuated
6145-00-865-20588663 INTERCHANGEABLE
Braid,wire
Belden Wire & Cable Company Llc Dba Belden Cdt Electronics Division
5310-01-056-21738663 INTERCHANGEABLE
Nut,plain,round
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
4730-01-218-0395 INTERCHANGEABLE
Bushing,pipe
7510-01-326-15678663 MB 2 IN (CUSTOM ORDER) INTERCHANGEABLE
Tape,pressure Sensitive Adhesive
3m Company
7510-01-326-15688663 MB-SS 4X36 INTERCHANGEABLE
Tape,pressure Sensitive Adhesive
3m Company
9330-01-326-18218663 MB-SS 8X36 INTERCHANGEABLE
Plastic Sheet,pressure Sensitive
3m Company
5340-01-355-0703312804-H-200-SL INTERCHANGEABLE
Clamp,loop
Voss Industries, Llc
9390-01-413-27307010295384 INTERCHANGEABLE
Tape,protective,plastic
3m Company
Cross-Reference Index
Part NumberManufacturer
8663 Haskel International, Llc Dba Haskel International, Llc (USA)
Related Parts
4730-00-270-3890INTERCHANGEABLE
NUT,SLIP JOINT
2910-00-374-3556INTERCHANGEABLE
PUMP,FUEL,CAM ACTUATED
6145-00-865-2058INTERCHANGEABLE
BRAID,WIRE
8663
5310-01-056-2173INTERCHANGEABLE
NUT,PLAIN,ROUND
8663
4730-01-218-0395INTERCHANGEABLE
BUSHING,PIPE
7510-01-326-1567INTERCHANGEABLE
TAPE,PRESSURE SENSITIVE ADHESIVE
8663 MB 2 IN (CUSTOM ORDER)
7510-01-326-1568INTERCHANGEABLE
TAPE,PRESSURE SENSITIVE ADHESIVE
8663 MB-SS 4X36
9330-01-326-1821INTERCHANGEABLE
PLASTIC SHEET,PRESSURE SENSITIVE
8663 MB-SS 8X36
5340-01-355-0703INTERCHANGEABLE
CLAMP,LOOP
312804-H-200-SL
9390-01-413-2730INTERCHANGEABLE
TAPE,PROTECTIVE,PLASTIC
7010295384
6240-01-500-4801INTERCHANGEABLE
LAMP,INCANDESCENT
8663
7510-01-509-7514INTERCHANGEABLE
TAPE,PRESSURE SENSITIVE ADHESIVE
8663-6

Frequently Asked Questions

What is NSN 1620-00-445-2581?

NSN 1620-00-445-2581 is a Check Valve Assy, manufactured by Haskel International, Llc Dba Haskel International, Llc, classified under FSC 1620 (No Item Name Available). Status: active.

What are the part numbers for NSN 1620-00-445-2581?

NSN 1620-00-445-2581 has 1 cross-referenced part number: 8663 (Haskel International, Llc Dba Haskel International, Llc).

What NSN replaces 1620-00-445-2581?

There are 12 known substitutes for 1620-00-445-2581: 4730-00-270-3890, 2910-00-374-3556, 6145-00-865-2058 and 9 more. Verify interchangeability with system specifications before substitution.

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