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Technical Data Sheet
PartsTable / COMPONENT / H1973-1
H1973-1 ✓ Verified by PartsTable
— · PIPE SECTION
WHAT YOU NEED TO KNOW
Schedule = wall thickness, NOT diameter Nominal pipe size != actual OD
Sch 40 and Sch 80 same OD, different wall
PRODUCT OVERVIEW

CAPACITOR,VARIABLE,CERAMIC DIELE. Key specifications include shape: TAPERED, material: STEEL OVERALL, body_style: PISTON, bore_shape: STRAIGHT, body_length: 1.406 INCHES NOMINAL IN, thread_class: 2A A. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-202-8699, 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
H1973-1
NSN: 4720-00-202-8699
FSC: 4720
CAGE: 17431 — ILLINOIS TOOL WORKS INC. (USA)
SPECIFICATIONS
shapeTAPERED
materialSTEEL OVERALL
body_stylePISTON
bore_shapeSTRAIGHT
body_length1.406 INCHES NOMINAL IN
thread_class2A A
bore_diameter13.00 MILLIMETERS NOMINAL MM
bushing_shapeROUND
overall_width10.00 MILLIMETERS NOMINAL MM
bushing_length0.281 INCHES NOMINAL IN
inclosure_typeENCAPSULATED
load_directionRADIAL
NSN4720-00-202-8699
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: H1973-1 · 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
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
61085Interchangeable
interchangeable cross-reference
interchangeable
55870Interchangeable
interchangeable cross-reference
interchangeable
E1N07FInterchangeable
interchangeable cross-reference
interchangeable
13480Interchangeable
interchangeable cross-reference
interchangeable
7108X1Interchangeable
interchangeable cross-reference
interchangeable
280026-72Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is H1973-1?
H1973-1 is a CAPACITOR,VARIABLE,CERAMIC DIELE.
What parts can replace H1973-1?
There are 21 known substitutes for H1973-1: 61085, 55870, E1N07F and 18 more. Substitute compatibility should be verified for your specific system.
Is H1973-1 still available?
H1973-1 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026