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546-8185-003 — SCREW,EXTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

546-8185-003: SCREW,EXTERNALLY RELIEVED BODY.

The SCREW,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 430 OVERALL, head_style: FILLISTER COUNTERSUNK, head_height: 0.132 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.235 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN, thread_length: 0.344 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-862-2003, 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
546-8185-003
NSN: 5305-00-862-2003
FSC: 5305 — Screws
CAGE: 13499 — ROCKWELL COLLINS, INC. DBA COLLINS AEROSPACE GOVERNMENT SYSTEMS DIV COLLINS AEROSPACE - GOVERNMENT SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL COMP 430 OVERALL
head_styleFILLISTER COUNTERSUNK
head_height0.132 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.235 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN
thread_length0.344 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
fastener_length1.516 INCHES MINIMUM AND 1.578 INCHES MAXIMUM IN
special_featuresFURNISHED W/ONE CAPTIVATED FLAT CRES WASHER
thread_directionRIGHT-HAND
countersink_angle90.0 DEGREES NOMINAL
surface_treatmentPASSIVATE OVERALL
internal_drive_styleSLOT
NSN5305-00-862-2003
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 546-8185-003 · 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: 0.132 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.516 INCHES MINIMUM AND 1.578 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.344 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
FIRST DIAMETER FROM HEAD: 0.116 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER: 0.919 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.132 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
FASTENER LENGTH1.516 INCHES MINIMUM AND 1.578 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.344 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
FIRST DIAMETER FROM HEAD0.116 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER0.919 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.164 INCHES IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER0.981 INCHES NOMINAL IN
HEAD STYLEFILLISTER COUNTERSUNK
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 546-8185-003?
546-8185-003 is a SCREW,EXTERNALLY RELIEVED BODY.
What is the NSN for 546-8185-003?
546-8185-003 is cataloged in the U.S. Government catalog under NSN 5305-00-862-2003. This indicates validated use in U.S. government and defense supply chains.
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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.