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491994 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

491994: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, ring_style: SPIRAL, usage_design: EXTERNAL OR INTERNAL, inside_diameter: 0.685 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN, major_thickness: 0.040 INCHES MINIMUM AND 0.044 INCHES MAXIMUM IN, outside_diameter: 0.805 INCHES MINIMUM AND 0.834 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-089-7415, 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
491994
NSN: 5325-01-089-7415
FSC: 5325 — Fastening Devices
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
ring_styleSPIRAL
usage_designEXTERNAL OR INTERNAL
inside_diameter0.685 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN
major_thickness0.040 INCHES MINIMUM AND 0.044 INCHES MAXIMUM IN
outside_diameter0.805 INCHES MINIMUM AND 0.834 INCHES MAXIMUM IN
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating72.0 ROCKWELL A MINIMUM AND 78.0 ROCKWELL A MAXIMUM
cross-sectional_shape_styleDOUBLE OVAL
NSN5325-01-089-7415
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 491994 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL HARDNESS RATING: 72.0 ROCKWELL A MINIMUM AND 78.0 ROCKWELL A MAXIMUM
•
USAGE DESIGN: EXTERNAL OR INTERNAL
•
CROSS-SECTIONAL SHAPE STYLE: DOUBLE OVAL
•
OUTSIDE DIAMETER: 0.805 INCHES MINIMUM AND 0.834 INCHES MAXIMUM IN
•
MAJOR THICKNESS: 0.040 INCHES MINIMUM AND 0.044 INCHES MAXIMUM IN
•
INSIDE DIAMETER: 0.685 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
RING STYLE: SPIRAL
TECHNICAL CHARACTERISTICS
MATERIAL HARDNESS RATING72.0 ROCKWELL A MINIMUM AND 78.0 ROCKWELL A MAXIMUM
USAGE DESIGNEXTERNAL OR INTERNAL
CROSS-SECTIONAL SHAPE STYLEDOUBLE OVAL
OUTSIDE DIAMETER0.805 INCHES MINIMUM AND 0.834 INCHES MAXIMUM IN
MAJOR THICKNESS0.040 INCHES MINIMUM AND 0.044 INCHES MAXIMUM IN
INSIDE DIAMETER0.685 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESPIRAL
MATERIALSTEEL CORROSION RESISTING
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
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 491994?
491994 is a RING,RETAINING.
What is the NSN for 491994?
491994 is cataloged in the U.S. Government catalog under NSN 5325-01-089-7415. This indicates validated use in U.S. government and defense supply chains.
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