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73-73-3 — DAMPER ASSEMBLY,ROT

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

73-73-3: DAMPER ASSEMBLY,ROT.

The DAMPER ASSEMBLY,ROT is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: BUTTON, thread_length: 0.6250 INCHES NOMINAL IN, fastener_length: 0.6250 INCHES NOMINAL IN, thread_direction: RIGHT-HAND, width_across_flats: 0.125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4720-00-235-4124, 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
73-73-3
NSN: 4720-00-235-4124
NIINs: 002354124, 004769814, 013772198, 016863207
FSC: 4720 — Hose and Flexible Tubing
CAGE: 35301 — DRESSER INDUSTRIES INC LEROI DIV (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleBUTTON
thread_length0.6250 INCHES NOMINAL IN
fastener_length0.6250 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_across_flats0.125 INCHES NOMINAL IN
internal_drive_styleHEXAGON
end_item_identification4120-016716270
nominal_thread_diameter0.1900 INCHES IN
thread_quantity_per_inch24
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
part_name_assigned_by_controlling_agencySCREW,CAP,SOCKET HEAD
NSN4720-00-235-4124
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 73-73-3 · 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
KEY FEATURES
•
MEASURING METHOD AND LENGTH: 36.000 INCHES NOMINAL OVERALL IN
•
TEMP RATING: -40.0 FAHRENHEIT AND 212.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
LAYER COMPOSITION AND LOCATION: 1ST LAYER BRAIDED TEXTILE YARN AND OUTER LAYER MOLDED RUBBER, SYNTHETIC
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
OUTSIDE DIAMETER: 1.656 INCHES NOMINAL IN
•
SPECIFICATION/STANDARD DATA: 81343 SAE J20-1 GOVERNMENT SPECIFICATION
•
INSIDE DIAMETER: 1.375 INCHES NOMINAL IN
•
INSIDE SURFACE CONDITION: SMOOTH
TECHNICAL CHARACTERISTICS
MEASURING METHOD AND LENGTH36.000 INCHES NOMINAL OVERALL IN
TEMP RATING-40.0 FAHRENHEIT AND 212.0 FAHRENHEIT SINGLE RESPONSE DEGF
LAYER COMPOSITION AND LOCATION1ST LAYER BRAIDED TEXTILE YARN AND OUTER LAYER MOLDED RUBBER, SYNTHETIC
CROSS-SECTIONAL SHAPE STYLEROUND
OUTSIDE DIAMETER1.656 INCHES NOMINAL IN
SPECIFICATION/STANDARD DATA81343 SAE J20-1 GOVERNMENT SPECIFICATION
INSIDE DIAMETER1.375 INCHES NOMINAL IN
INSIDE SURFACE CONDITIONSMOOTH
BURST TEST PRESSURE210.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
OUTER COVERING ENVIRONMENTAL PROTECTIONABRASION RESISTANT AND OIL RESISTANT AND WEATHERPROOF
SUBSTITUTES & CROSS-REFERENCES 7
J20-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
12250386Reference document
Same NSN cross-reference
Reference document — Secondary reference
ZZ-H-428Reference document
Same NSN cross-reference
Reference document — Secondary reference
20R1ECH-B-35X914Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
SAE-J20/1Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
MS521302B110360Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 73-73-3?
73-73-3 is a DAMPER ASSEMBLY,ROT.
What parts can replace 73-73-3?
There are 7 known substitutes for 73-73-3: J20-1, 12250386, ZZ-H-428 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 73-73-3?
73-73-3 is cataloged in the U.S. Government catalog under NSN 4720-00-235-4124. This indicates validated use in U.S. government and defense supply chains.
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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.