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B4918 — SHAFT,STRAIGHT

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

B4918: SHAFT,STRAIGHT.

The SHAFT,STRAIGHT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303, end_similarity: NOT IDENTICAL, overall_length: 7.200 INCHES NOMINAL IN, surface_finish: 29.0 MICROINCHES, first_end_style: CIRCULAR GROOVED, second_end_style: CIRCULAR GROOVED. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-094-3683, 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
B4918
NSN: 5330-00-094-3683
NIINs: 000943683, 008769040
FSC: 5330 — Packing and Gasket Materials
CAGE: 64104 — DRESSER, LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 303
end_similarityNOT IDENTICAL
overall_length7.200 INCHES NOMINAL IN
surface_finish29.0 MICROINCHES
first_end_styleCIRCULAR GROOVED
second_end_styleCIRCULAR GROOVED
special_featuresSTYLE DESIGNATOR:NO.60 IRREGULAR SHAPE FROM FIIG A03200
first_end_diameter0.4370 INCHES NOMINAL IN
second_end_diameter0.4370 INCHES NOMINAL IN
first_end_groove_width0.0390 INCHES MINIMUM AND 0.0420 INCHES MAXIMUM IN
supplementary_featuresCROSS-SECTIONAL SHAPE STYLE:NO.195 IRREGULAR SHAPE FROM FIIG A03200
second_end_groove_width0.0390 INCHES MINIMUM AND 0.0420 INCHES MAXIMUM IN
NSN5330-00-094-3683
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: B4918 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
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SUPPLEMENTARY FEATURES: CROSS-SECTIONAL SHAPE STYLE:NO.195 IRREGULAR SHAPE FROM FIIG A03200
TECHNICAL CHARACTERISTICS
SUPPLEMENTARY FEATURESCROSS-SECTIONAL SHAPE STYLE:NO.195 IRREGULAR SHAPE FROM FIIG A03200
SPECIAL FEATURESSTYLE DESIGNATOR:NO.60 IRREGULAR SHAPE FROM FIIG A03200
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B4918?
B4918 is a SHAFT,STRAIGHT.
What is the NSN for B4918?
B4918 is cataloged in the U.S. Government catalog under NSN 5330-00-094-3683. 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.