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PartsTable / COMPONENT / AN550-4R12
AN550-4R12 ✓ 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,WOOD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT COUNTERSUNK, head_diameter: 0.200 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN, fastener_length: 1.450 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN, countersink_angle: 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM, surface_treatment: CADMIUM AND ZINC OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-180-0610, 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
AN550-4R12
NSN: 5305-00-180-0610
FSC: 5305
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT COUNTERSUNK
head_diameter0.200 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
fastener_length1.450 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
countersink_angle80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
surface_treatmentCADMIUM AND ZINC OVERALL
internal_drive_styleCROSS RECESS TYPE 1
nonmachine_thread_styleGIMLET POINT (TYPE A, AB OR BA)
nonmachine_nominal_thread_diameter0.112 INCHES IN
surface_treatment_document_and_classificationQQ-P-416,TY1,CLASS 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL
NSN5305-00-180-0610
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AN550-4R12 · 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
•
MATERIAL: STEEL OVERALL
•
SURFACE TREATMENT: CADMIUM AND ZINC OVERALL
•
NONMACHINE THREAD STYLE: GIMLET POINT (TYPE A, AB OR BA)
•
HEAD DIAMETER: 0.200 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
•
NONMACHINE NOMINAL THREAD DIAMETER: 0.112 INCHES IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY1,CLASS 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL
•
FASTENER LENGTH: 1.450 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
•
COUNTERSINK ANGLE: 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM AND ZINC OVERALL
NONMACHINE THREAD STYLEGIMLET POINT (TYPE A, AB OR BA)
HEAD DIAMETER0.200 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
NONMACHINE NOMINAL THREAD DIAMETER0.112 INCHES IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY1,CLASS 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL
FASTENER LENGTH1.450 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
COUNTERSINK ANGLE80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
HEAD STYLEFLAT COUNTERSUNK
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
MS35492-598Interchangeable
interchangeable cross-reference
interchangeable
FF-S-111DInterchangeable
interchangeable cross-reference
interchangeable
MS35492-98Interchangeable
interchangeable cross-reference
interchangeable
FFS111Interchangeable
interchangeable cross-reference
interchangeable
MS35492-271Interchangeable
interchangeable cross-reference
interchangeable
MS35493-81Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN550-4R12?
AN550-4R12 is a SCREW,WOOD.
What parts can replace AN550-4R12?
There are 14 known substitutes for AN550-4R12: MS35492-598, FF-S-111D, MS35492-98 and 11 more. Substitute compatibility should be verified for your specific system.
Is AN550-4R12 still available?
AN550-4R12 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026