PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 340638
340638 ✓ 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

ISOLATOR,RADIO FREQUENCY REFLECT. Key specifications include material: IRON OVERALL, duty_type: CONTINUOUS, body_length: 0.625 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN, head_height: 0.437 INCHES MINIMUM AND 0.484 INCHES MAXIMUM IN, magnet_width: 0.190 INCHES NOMINAL IN, coil_quantity: 11. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-278-6335, 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
340638
NSN: 4730-00-278-6335
FSC: 4730
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
materialIRON OVERALL
duty_typeCONTINUOUS
body_length0.625 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN
head_height0.437 INCHES MINIMUM AND 0.484 INCHES MAXIMUM IN
magnet_width0.190 INCHES NOMINAL IN
coil_quantity11
overall_width0.460 INCHES MAXIMUM0.460 INCHES MAXIMUM IN
overall_height0.475 INCHES NOMINAL0.475 INCHES NOMINAL IN
overall_length1.135 INCHES MAXIMUM1.135 INCHES MAXIMUM IN
connection_stylePLAIN
style_designatorPLUG, MAGNETIC
thread_directionRIGHT-HAND EXTERNAL
NSN4730-00-278-6335
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 340638 · 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
•
BODY LENGTH: 0.625 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN
•
CONNECTION STYLE: PLAIN
•
THREAD DIRECTION: RIGHT-HAND EXTERNAL
•
MAGNET PROJECTION LENGTH: 0.016 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
•
MAGNET WIDTH: 0.190 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLUG, MAGNETIC
•
THREAD SERIES DESIGNATOR: NPTF EXTERNAL
•
MATERIAL: IRON OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
BODY LENGTH0.625 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN
CONNECTION STYLEPLAIN
THREAD DIRECTIONRIGHT-HAND EXTERNAL
MAGNET PROJECTION LENGTH0.016 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
MAGNET WIDTH0.190 INCHES NOMINAL IN
STYLE DESIGNATORPLUG, MAGNETIC
THREAD SERIES DESIGNATORNPTF EXTERNAL
MATERIALIRON OVERALL
NOMINAL THREAD SIZE0.750 INCHES EXTERNAL IN
HEAD HEIGHT0.437 INCHES MINIMUM AND 0.484 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
A1745Interchangeable
interchangeable cross-reference
interchangeable
264-0477-001Interchangeable
interchangeable cross-reference
interchangeable
52600026-3Interchangeable
interchangeable cross-reference
interchangeable
60-8017-0313-00-339Interchangeable
interchangeable cross-reference
interchangeable
522000Interchangeable
interchangeable cross-reference
interchangeable
201-120Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy 340638?
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 340638?
340638 is a ISOLATOR,RADIO FREQUENCY REFLECT.
What parts can replace 340638?
There are 22 known substitutes for 340638: A1745, 264-0477-001, 52600026-3 and 19 more. Substitute compatibility should be verified for your specific system.
Is 340638 still available?
340638 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 — 340638

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