PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 1641B
1641B ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

FILTER,RADIO FREQUENCY INTERFERE. Key specifications include height: 0.5469 INCHES NOMINAL IN, material: STEEL BODY, shank_length: 0.1875 INCHES NOMINAL IN, thread_class: 3B, special_features: MATERIAL IS COMP 12L14 STEEL., style_designator: STRAIGHT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-050-4203, 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
1641B
NSN: 4730-00-050-4203
FSC: 4730
CAGE: 57733 — STEWART-WARNER CORPORATION (USA)
SPECIFICATIONS
height0.5469 INCHES NOMINAL IN
materialSTEEL BODY
shank_length0.1875 INCHES NOMINAL IN
thread_class3B
special_featuresMATERIAL IS COMP 12L14 STEEL.
style_designatorSTRAIGHT
surface_treatmentZINC BODY
width_across_flats0.3125 INCHES NOMINAL IN
nominal_thread_size0.25 INCHES IN
thread_quantity_per_inch28
screw_thread_series_designatorUNF
part_name_assigned_by_controlling_agencyFITTING,GREASE
NSN4730-00-050-4203
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1641B · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 32
22020Interchangeable
interchangeable cross-reference
interchangeable
69-773Interchangeable
interchangeable cross-reference
interchangeable
300-12Interchangeable
interchangeable cross-reference
interchangeable
4301Interchangeable
interchangeable cross-reference
interchangeable
122-5277671 ITEM 33Interchangeable
interchangeable cross-reference
interchangeable
9412350Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy 1641B?
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 1641B?
1641B is a FILTER,RADIO FREQUENCY INTERFERE.
What parts can replace 1641B?
There are 32 known substitutes for 1641B: 22020, 69-773, 300-12 and 29 more. Substitute compatibility should be verified for your specific system.
Is 1641B still available?
1641B is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 1641B

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026