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Technical Data Sheet
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81630 ✓ Verified by PartsTable
InLine · 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

- LWL Duplex cable<br>- 2x ST plug to 2x ST plug<br>- Thread: 62.5/125µm, OM2<br>- No halogen. Key specifications include capacity: 10.0 MILLILITERS, material: GLASS LOCATION NOT OTHERWISE SPECIFIED, tip_type: REMOVABLE, part_name_assigned_by_controlling_agency: GASTIGHT SYRINGE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-916-2299, 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
81630
NSN: 4730-00-916-2299
FSC: 4730
CAGE: 81982 — HYDRO-AIRE AEROSPACE CORP (USA)
SPECIFICATIONS
capacity10.0 MILLILITERS
materialGLASS LOCATION NOT OTHERWISE SPECIFIED
tip_typeREMOVABLE
part_name_assigned_by_controlling_agencyGASTIGHT SYRINGE
NSN4730-00-916-2299
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 81630 · InLine ⚠ 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
•
FASTENING DEVICE TYPE: SELF-LOCKING HEXAGON NUT
•
MATERIAL: STEEL COMP 301 NUT
•
STYLE DESIGNATOR: BAND
•
SURFACE TREATMENT: ANODIZE BAND
TECHNICAL CHARACTERISTICS (FLIS)
FASTENING DEVICE TYPESELF-LOCKING HEXAGON NUT
SPECIAL FEATURESW/NUT PLATE BRACKET AND NAS687X4K NUT PLATE
MATERIALSTEEL COMP 301 NUT
MATERIALALUMINUM ALLOY 6061 BAND
STYLE DESIGNATORBAND
SURFACE TREATMENTANODIZE BAND
MATERIALALUMINUM ALLOY 6061 BOLT
OVERALL WIDTH1.000 INCHES NOMINAL IN
INSIDE DIAMETER6.630 INCHES NOMINAL IN
TEMP RATING550.0 FAHRENHEIT DEGF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
64521Interchangeable
interchangeable cross-reference
interchangeable
5351215Interchangeable
interchangeable cross-reference
interchangeable
5355684Interchangeable
interchangeable cross-reference
interchangeable
81630Interchangeable
interchangeable cross-reference
interchangeable
81160Interchangeable
interchangeable cross-reference
interchangeable
4SILIHI030Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 81630?
81630 is a SHOCK ABSORBER,DIRECT ACTION manufactured by InLine.
What parts can replace 81630?
There are 9 known substitutes for 81630: 64521, 5351215, 5355684 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 81630?
81630 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-916-2299. 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