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PartsTable / COMPONENT / H70173-034
H70173-034 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 0.375 INCHES NOMINAL IN, diameter: 0.250 INCHES NOMINAL IN, style_designator: PROJECTION ONE END, cross-sectional_shape: ROUND, left_counterbore_depth: 0.105 INCHES NOMINAL IN, left_counterbore_diameter: 0.149 INCHES MINIMUM AND 0.152 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-255-6637, 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
H70173-034
NSN: 5340-00-255-6637
FSC: 5340
CAGE: 19133 — MCDONNELL DOUGLAS CORP MCDONNELL DOUGLAS AEROSPACE OPNS WEST (USA)
SPECIFICATIONS
length0.375 INCHES NOMINAL IN
diameter0.250 INCHES NOMINAL IN
style_designatorPROJECTION ONE END
cross-sectional_shapeROUND
left_counterbore_depth0.105 INCHES NOMINAL IN
left_counterbore_diameter0.149 INCHES MINIMUM AND 0.152 INCHES MAXIMUM IN
NSN5340-00-255-6637
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: H70173-034 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
LENGTH: 0.375 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PROJECTION ONE END
•
LEFT COUNTERBORE DIAMETER: 0.149 INCHES MINIMUM AND 0.152 INCHES MAXIMUM IN
•
LEFT COUNTERBORE DEPTH: 0.105 INCHES NOMINAL IN
•
DIAMETER: 0.250 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE: ROUND
TECHNICAL CHARACTERISTICS (FLIS)
LENGTH0.375 INCHES NOMINAL IN
STYLE DESIGNATORPROJECTION ONE END
LEFT COUNTERBORE DIAMETER0.149 INCHES MINIMUM AND 0.152 INCHES MAXIMUM IN
LEFT COUNTERBORE DEPTH0.105 INCHES NOMINAL IN
DIAMETER0.250 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
101-2173-1Interchangeable
interchangeable cross-reference
interchangeable
7717-107NWHTInterchangeable
interchangeable cross-reference
interchangeable
104459Interchangeable
interchangeable cross-reference
interchangeable
35636Interchangeable
interchangeable cross-reference
interchangeable
1512015Interchangeable
interchangeable cross-reference
interchangeable
9535BSS0440-7Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is H70173-034?
H70173-034 is a STANDOFF,THREADED,SPACING.
What parts can replace H70173-034?
There are 7 known substitutes for H70173-034: 101-2173-1, 7717-107NWHT, 104459 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for H70173-034?
H70173-034 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-255-6637. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026