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Technical Data Sheet
PartsTable / COMPONENT / 5574120
5574120 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL, end_style: 90 DEGREE PARALLEL, ring_style: STRAIGHT GAP, usage_design: EXTERNAL, inside_diameter: 0.493 INCHES NOMINAL IN, major_thickness: 0.069 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-543-3615, 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
5574120
NSN: 5325-00-543-3615
FSC: 5325
CAGE: 38597 — LOCKHEED MARTIN CORPORATION DIV ROTARY AND MISSION SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL
end_style90 DEGREE PARALLEL
ring_styleSTRAIGHT GAP
usage_designEXTERNAL
inside_diameter0.493 INCHES NOMINAL IN
major_thickness0.069 INCHES NOMINAL IN
outside_diameter0.631 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating48.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
cross-sectional_shape_styleRECTANGULAR
NSN5325-00-543-3615
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5574120 · 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
•
END STYLE: 90 DEGREE PARALLEL
•
MATERIAL: STEEL
•
RING STYLE: STRAIGHT GAP
•
MAJOR THICKNESS: 0.069 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.493 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
MATERIAL HARDNESS RATING: 48.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
•
USAGE DESIGN: EXTERNAL
TECHNICAL CHARACTERISTICS (FLIS)
END STYLE90 DEGREE PARALLEL
MATERIALSTEEL
RING STYLESTRAIGHT GAP
MAJOR THICKNESS0.069 INCHES NOMINAL IN
INSIDE DIAMETER0.493 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
MATERIAL HARDNESS RATING48.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
USAGE DESIGNEXTERNAL
CASEHARDENING INDICATORNOT CASEHARDENED
OUTSIDE DIAMETER0.631 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
PF147Interchangeable
interchangeable cross-reference
interchangeable
29400198087Interchangeable
interchangeable cross-reference
interchangeable
PM-305Interchangeable
interchangeable cross-reference
interchangeable
5574968Interchangeable
Same NIIN cross-reference
interchangeable
5365005433615Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5574120?
5574120 is a RING,RETAINING.
What parts can replace 5574120?
There are 5 known substitutes for 5574120: PF147, 29400198087, PM-305 and 2 more. Substitute compatibility should be verified for your specific system.
Is 5574120 still available?
5574120 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