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PartsTable / COMPONENT / AN505-3-4
AN505-3-4 ✓ 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: 0.175 INCHES MINIMUM AND 0.199 INCHES MAXIMUM IN, thread_length: 0.208 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, screw_material: STEEL OR STEEL COMP 1010, fastener_length: 0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-144-4028, 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
AN505-3-4
NSN: 5305-00-144-4028
FSC: 5305
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
head_styleFLAT COUNTERSUNK
thread_class2A A
head_diameter0.175 INCHES MINIMUM AND 0.199 INCHES MAXIMUM IN
thread_length0.208 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
screw_materialSTEEL OR STEEL COMP 1010
fastener_length0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
countersink_angle80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.099 INCHES IN
screw_surface_treatmentCADMIUM
minimum_tensile_strength55000 POUNDS PER SQUARE INCH LBS
NSN5305-00-144-4028
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AN505-3-4 · 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
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-630 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-631 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-634 FED SPEC 2ND MATERIAL RESPONSE
•
THREAD QUANTITY PER INCH: 48
•
SCREW MATERIAL: STEEL OR STEEL COMP 1010
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
NOMINAL THREAD DIAMETER: 0.099 INCHES IN
•
MINIMUM TENSILE STRENGTH: 55000 POUNDS PER SQUARE INCH LBS
•
FASTENER LENGTH: 0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS (FLIS)
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-630 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-631 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-634 FED SPEC 2ND MATERIAL RESPONSE
THREAD QUANTITY PER INCH48
SCREW MATERIALSTEEL OR STEEL COMP 1010
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
NOMINAL THREAD DIAMETER0.099 INCHES IN
MINIMUM TENSILE STRENGTH55000 POUNDS PER SQUARE INCH LBS
FASTENER LENGTH0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD LENGTH0.208 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
COUNTERSINK ANGLE80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
8051Interchangeable
interchangeable cross-reference
interchangeable
E25AInterchangeable
interchangeable cross-reference
interchangeable
FFS92ANDTYPE1ANDSTYLE2Interchangeable
interchangeable cross-reference
interchangeable
AN505-3-5Interchangeable
interchangeable cross-reference
interchangeable
AN510DD6-24Interchangeable
interchangeable cross-reference
interchangeable
AN510C10-7Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN505-3-4?
AN505-3-4 is a SCREW,MACHINE.
What parts can replace AN505-3-4?
There are 12 known substitutes for AN505-3-4: 8051, E25A, FFS92ANDTYPE1ANDSTYLE2 and 9 more. Substitute compatibility should be verified for your specific system.
Is AN505-3-4 still available?
AN505-3-4 is currently cancelled.
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Last verified: July 2026