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PartsTable / COMPONENT / AN550-14R28
AN550-14R28 ✓ 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: 0.437 INCHES MINIMUM AND 0.491 INCHES MAXIMUM IN, fastener_length: 3.406 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN, countersink_angle: 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM, surface_treatment: CADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-025-4020, 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
AN550-14R28
NSN: 5305-00-025-4020
FSC: 5305
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT COUNTERSUNK
head_diameter0.437 INCHES MINIMUM AND 0.491 INCHES MAXIMUM IN
fastener_length3.406 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN
countersink_angle80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
surface_treatmentCADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL
internal_drive_styleCROSS RECESS TYPE 1
nonmachine_thread_styleGIMLET POINT (TYPE A, AB OR BA)
nondefinitive_spec/std_data1 TYPE AND 2C STYLE
nonmachine_nominal_thread_diameter0.242 INCHES IN
surface_treatment_document_and_classificationQQ-P-416,TY2,CL3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY2,CL3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
NSN5305-00-025-4020
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AN550-14R28 · 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 DIAMETER: 0.437 INCHES MINIMUM AND 0.491 INCHES MAXIMUM IN
•
FASTENER LENGTH: 3.406 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND 2C STYLE
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY2,CL3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY2,CL3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
•
NONMACHINE NOMINAL THREAD DIAMETER: 0.242 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK
TECHNICAL CHARACTERISTICS (FLIS)
HEAD DIAMETER0.437 INCHES MINIMUM AND 0.491 INCHES MAXIMUM IN
FASTENER LENGTH3.406 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 2C STYLE
SURFACE TREATMENTCADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY2,CL3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY2,CL3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
NONMACHINE NOMINAL THREAD DIAMETER0.242 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
NONMACHINE THREAD STYLEGIMLET POINT (TYPE A, AB OR BA)
COUNTERSINK ANGLE80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
FFS111Interchangeable
Same NIIN cross-reference
interchangeable
FFS111ANDSTYLE2Interchangeable
Same NIIN cross-reference
interchangeable
MS35492-114Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN550-14R28?
AN550-14R28 is a SCREW,WOOD.
What parts can replace AN550-14R28?
There are 3 known substitutes for AN550-14R28: FFS111, FFS111ANDSTYLE2, MS35492-114. Substitute compatibility should be verified for your specific system.
Is AN550-14R28 still available?
AN550-14R28 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