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88-20565-1 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

88-20565-1: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT COUNTERSUNK, head_diameter: 0.308 INCHES NOMINAL IN, thread_length: 0.625 INCHES NOMINAL IN, fastener_length: 0.750 INCHES NOMINAL IN, thread_direction: RIGHT-HAND, countersink_angle: 82.0 DEGREES NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-470-4533, 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
88-20565-1
NSN: 5305-01-470-4533
FSC: 5305 — Screws
CAGE: 30554 — DEPARTMENT OF DEFENSE PROJECT MANAGER-MOBILE ELECTRIC POWER (USA)
SPECIFICATIONS
head_styleFLAT COUNTERSUNK
head_diameter0.308 INCHES NOMINAL IN
thread_length0.625 INCHES NOMINAL IN
fastener_length0.750 INCHES NOMINAL IN
thread_directionRIGHT-HAND
countersink_angle82.0 DEGREES NOMINAL
internal_drive_styleCROSS RECESS TYPE II
end_item_identificationGENERATOR SET, DIESEL ENGINE 6115-01-462-0291
nominal_thread_diameter0.1640 INCHES IN
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
part_name_assigned_by_controlling_agencySCREW, MACHINE-FLAT COUNTERSUNK HEAD, 82 DEGREES
NSN5305-01-470-4533
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 88-20565-1 · 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
•
FASTENER LENGTH: 0.750 INCHES NOMINAL IN
•
THREAD LENGTH: 0.625 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.1640 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK
•
THREAD DIRECTION: RIGHT-HAND
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE II
•
COUNTERSINK ANGLE: 82.0 DEGREES NOMINAL
TECHNICAL CHARACTERISTICS
FASTENER LENGTH0.750 INCHES NOMINAL IN
THREAD LENGTH0.625 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.1640 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
INTERNAL DRIVE STYLECROSS RECESS TYPE II
COUNTERSINK ANGLE82.0 DEGREES NOMINAL
PART NAME ASSIGNED BY CONTROLLING AGENCYSCREW, MACHINE-FLAT COUNTERSUNK HEAD, 82 DEGREES
END ITEM IDENTIFICATIONGENERATOR SET, DIESEL ENGINE 6115-01-462-0291
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 88-20565-1?
88-20565-1 is a SCREW,MACHINE.
What is the NSN for 88-20565-1?
88-20565-1 is cataloged in the U.S. Government catalog under NSN 5305-01-470-4533. 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.