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AN520-8R7 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

AN520-8R7: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: ROUND, head_height: 0.120 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.287 INCHES MINIMUM AND 0.309 INCHES MAXIMUM IN, thread_length: 0.406 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN, screw_material: STEEL. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-144-3735, 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
AN520-8R7
NSN: 5305-00-144-3735
FSC: 5305 — Screws
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
head_styleROUND
head_height0.120 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.287 INCHES MINIMUM AND 0.309 INCHES MAXIMUM IN
thread_length0.406 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
screw_materialSTEEL
fastener_length0.407 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.164 INCHES IN
screw_surface_treatmentCADMIUM
thread_quantity_per_inch36
NSN5305-00-144-3735
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AN520-8R7 · 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
•
HEAD HEIGHT: 0.120 INCHES MAXIMUM IN
•
SCREW SURFACE TREATMENT: CADMIUM
•
FASTENER LENGTH: 0.407 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.406 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
•
HEAD STYLE: ROUND
•
THREAD DIRECTION: RIGHT-HAND
•
SCREW MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.120 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTCADMIUM
FASTENER LENGTH0.407 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
THREAD LENGTH0.406 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.164 INCHES IN
HEAD STYLEROUND
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL
INTERNAL DRIVE STYLESLOT
THREAD CLASS2A A
SUBSTITUTES & CROSS-REFERENCES 2
FFS92ANDTYPE3ANDSTYLE1CReference document
Same NSN cross-reference
Reference document — Identification reference
1027300-8-7Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AN520-8R7?
AN520-8R7 is a SCREW,MACHINE.
What parts can replace AN520-8R7?
There are 2 known substitutes for AN520-8R7: FFS92ANDTYPE3ANDSTYLE1C, 1027300-8-7. Substitute compatibility should be verified for your specific system.
What is the NSN for AN520-8R7?
AN520-8R7 is cataloged in the U.S. Government catalog under NSN 5305-00-144-3735. 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.