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552693 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

552693: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT COUNTERSUNK, head_diameter: 24.0 MILLIMETERS NOMINAL MM, thread_length: 18.5 MILLIMETERS NOMINAL MM, fastener_length: 25.0 MILLIMETERS NOMINAL MM, hardness_rating: 32.0 ROCKWELL C NOMINAL OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-628-6971, 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
552693
NSN: 5305-01-628-6971
FSC: 5305 — Screws
CAGE: 5PFF0 — HYDREMA U.S., INC. DBA HYDREMA US INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT COUNTERSUNK
head_diameter24.0 MILLIMETERS NOMINAL MM
thread_length18.5 MILLIMETERS NOMINAL MM
fastener_length25.0 MILLIMETERS NOMINAL MM
hardness_rating32.0 ROCKWELL C NOMINAL OVERALL
thread_directionRIGHT-HAND
countersink_angle90.0 DEGREES NOMINAL
width_across_flats8.0 MILLIMETERS NOMINAL MM
internal_drive_styleHEXAGON
nominal_thread_diameter1.75 MILLIMETERS MM
minimum_tensile_strength120000 POUNDS PER SQUARE INCH LBS
NSN5305-01-628-6971
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 552693 · 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
•
WIDTH ACROSS FLATS: 8.0 MILLIMETERS NOMINAL MM
•
FASTENER LENGTH: 25.0 MILLIMETERS NOMINAL MM
•
THREAD PITCH IN MILLIMETERS: 12.0
•
THREAD LENGTH: 18.5 MILLIMETERS NOMINAL MM
•
HARDNESS RATING: 32.0 ROCKWELL C NOMINAL OVERALL
•
NOMINAL THREAD DIAMETER: 1.75 MILLIMETERS MM
•
HEAD STYLE: FLAT COUNTERSUNK
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS8.0 MILLIMETERS NOMINAL MM
FASTENER LENGTH25.0 MILLIMETERS NOMINAL MM
THREAD PITCH IN MILLIMETERS12.0
THREAD LENGTH18.5 MILLIMETERS NOMINAL MM
HARDNESS RATING32.0 ROCKWELL C NOMINAL OVERALL
NOMINAL THREAD DIAMETER1.75 MILLIMETERS MM
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
MINIMUM TENSILE STRENGTH120000 POUNDS PER SQUARE INCH LBS
INTERNAL DRIVE STYLEHEXAGON
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES 1
91304A172Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 552693?
552693 is a SCREW,CAP,SOCKET HEAD.
What parts can replace 552693?
There is 1 known substitute for 552693: 91304A172. Substitute compatibility should be verified for your specific system.
What is the NSN for 552693?
552693 is cataloged in the U.S. Government catalog under NSN 5305-01-628-6971. 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.