PartsTable
Technical Data Sheet
Download PDF

9R1641-1 — RESTRICTOR UNIT,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

9R1641-1: RESTRICTOR UNIT,FLUID FLOW.

The RESTRICTOR UNIT,FLUID FLOW is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY FILTER, valve_size: 0.250 INCHES IN, design_type: STRAIGHT, thread_class: 3A LOCATION NOT OTHERWISE SPECIFIED A, thread_series: UNF ALL CONNECTIONS, overall_length: 4.125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-889-9602, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
9R1641-1
NSN: 4730-00-889-9602
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 26044 — SAF INDUSTRIES LLC DBA SAF INDUSTRIES LLC DIV GARKENYON (USA)
SPECIFICATIONS
materialCOPPER ALLOY FILTER
valve_size0.250 INCHES IN
design_typeSTRAIGHT
thread_class3A LOCATION NOT OTHERWISE SPECIFIED A
thread_seriesUNF ALL CONNECTIONS
overall_length4.125 INCHES NOMINAL IN
pressure_rating250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
orifice_diameter0.078 INCHES NOMINAL IN
thread_directionRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
unable_to_decodeUNABLE TO DECODE
width_across_flats0.750 INCHES NOMINAL IN
end_connection_typeTHREADED MALE, REGULAR FLARE LOCATION NOT OTHERWISE SPECIFIED
NSN4730-00-889-9602
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 9R1641-1 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FSC APPLICATION DATA: RESTRICTOR UNIT,FLUID FLOW,AIRBORNE
•
PRESSURE RATING: 250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
•
WIDTH ACROSS FLATS: 0.750 INCHES NOMINAL IN
•
STRAINER TYPE AND QUANTITY: 2 FILTER
•
END CONNECTION COMPONENT TYPE AND SIZE FOR WHICH DESIGNED: U/W 1/4 IN. OD TUBE IN
•
DESIGN TYPE: STRAIGHT
•
THREAD SERIES: UNF ALL CONNECTIONS
•
END CONNECTION TYPE: THREADED MALE, REGULAR FLARE LOCATION NOT OTHERWISE SPECIFIED
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATARESTRICTOR UNIT,FLUID FLOW,AIRBORNE
PRESSURE RATING250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
WIDTH ACROSS FLATS0.750 INCHES NOMINAL IN
STRAINER TYPE AND QUANTITY2 FILTER
END CONNECTION COMPONENT TYPE AND SIZE FOR WHICH DESIGNEDU/W 1/4 IN. OD TUBE IN
DESIGN TYPESTRAIGHT
THREAD SERIESUNF ALL CONNECTIONS
END CONNECTION TYPETHREADED MALE, REGULAR FLARE LOCATION NOT OTHERWISE SPECIFIED
OVERALL LENGTH4.125 INCHES NOMINAL IN
VALVE SIZE0.250 INCHES IN
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 1
658073-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy 9R1641-1?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 9R1641-1?
9R1641-1 is a RESTRICTOR UNIT,FLUID FLOW.
What parts can replace 9R1641-1?
There is 1 known substitute for 9R1641-1: 658073-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 9R1641-1?
9R1641-1 is cataloged in the U.S. Government catalog under NSN 4730-00-889-9602. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 9R1641-1

✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.