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PartsTable / COMPONENT / AN505C6-7
AN505C6-7 ✓ 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 SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT COUNTERSUNK, thread_class: 2A A, head_diameter: 0.244 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN, thread_length: 0.376 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN, screw_material: STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316, fastener_length: 0.438 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-579-4418, 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
AN505C6-7
NSN: 5305-00-579-4418
FSC: 5305
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
head_styleFLAT COUNTERSUNK
thread_class2A A
head_diameter0.244 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN
thread_length0.376 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
screw_materialSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316
fastener_length0.438 INCHES NOMINAL IN
thread_directionRIGHT-HAND
countersink_angle80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
internal_drive_styleCROSS RECESS TYPE 1
end_item_identificationMRAP RG-33
nominal_thread_diameter0.138 INCHES IN
screw_surface_treatmentPASSIVATE
NSN5305-00-579-4418
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AN505C6-7 · 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: 0.406 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
•
HEAD DIAMETER: 0.257 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
HEAD STYLE: FLAT COUNTERSUNK
•
THREAD CLASS: 2A A
•
THREAD LENGTH: 0.406 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD QUANTITY PER INCH: 32
TECHNICAL CHARACTERISTICS (FLIS)
FASTENER LENGTH0.406 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
HEAD DIAMETER0.257 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
HEAD STYLEFLAT COUNTERSUNK
THREAD CLASS2A A
THREAD LENGTH0.406 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH32
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7720 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-7720 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-7720 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-7720 MIL SPEC 4TH MATERIAL RESPONSE OR QQ-S-763,CLASS 4 FED SPEC 5TH MATERIAL RESPONSE
NOMINAL THREAD DIAMETER0.138 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
10125451Interchangeable
interchangeable cross-reference
interchangeable
AN505C6-7Interchangeable
interchangeable cross-reference
interchangeable
100037-6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN505C6-7?
AN505C6-7 is a SCREW,MACHINE.
What parts can replace AN505C6-7?
There are 3 known substitutes for AN505C6-7: 10125451, AN505C6-7, 100037-6. Substitute compatibility should be verified for your specific system.
What is the NSN for AN505C6-7?
AN505C6-7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-579-4418. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026