PartsTable
Technical Data Sheet

51 R1T-1/4 — FILTER,RADIO FREQUENCY INTERFERE

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

51 R1T-1/4: FILTER,RADIO FREQUENCY INTERFERE.

FILTER,RADIO FREQUENCY INTERFERE. Key specifications include material: STEEL COMP 304 OVERALL, nut_style: HEXAGON, head_style: HEXAGON, nut_height: 0.750 INCHES NOMINAL IN, head_height: 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN, thread_class: 2B. This part is cataloged in the U.S.

Government catalog under NSN 4720-00-460-3915, 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
51 R1T-1/4
NSN: 4720-00-460-3915
FSC: 4720 — Hose and Flexible Tubing
CAGE: B5860 — EUREGIO HYDRAULICS SA (BEL)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
nut_styleHEXAGON
head_styleHEXAGON
nut_height0.750 INCHES NOMINAL IN
head_height0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN
thread_class2B
nominal_width0.531 INCHES IN
thread_length1.500 INCHES MAXIMUM IN
thread_seriesUNF
surface_finish125.0 MICROINCHES BOTH ENDS
fastener_length1.500 INCHES NOMINAL IN
first_end_styleSQUARE
NSN4720-00-460-3915
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 51 R1T-1/4 · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES 7
1-4 421Reference document
Same NSN cross-reference
Reference document — Secondary reference
421-4Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
100R1 TYAT SZ4Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
129075Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
421-4(245-4)Reference document
Same NSN cross-reference
Reference document — Secondary reference
79505Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Shelf-life managedAcquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 51 R1T-1/4?
51 R1T-1/4 is a FILTER,RADIO FREQUENCY INTERFERE.
What parts can replace 51 R1T-1/4?
There are 7 known substitutes for 51 R1T-1/4: 1-4 421, 421-4, 100R1 TYAT SZ4 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 51 R1T-1/4?
51 R1T-1/4 is cataloged in the U.S. Government catalog under NSN 4720-00-460-3915. This indicates validated use in U.S. government and defense supply chains.
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✓ 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.