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546-8188-003 — SCREW,EXTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

546-8188-003: 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: OVAL COUNTERSUNK, thread_class: 2A A, head_diameter: 0.235 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN, thread_length: 0.407 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN, fastener_length: 2.294 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-862-2000, 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
546-8188-003
NSN: 5305-00-862-2000
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_styleOVAL COUNTERSUNK
thread_class2A A
head_diameter0.235 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN
thread_length0.407 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
fastener_length2.294 INCHES NOMINAL IN
special_featuresFURNISHED WITH WASHER ON THREADED END
thread_directionRIGHT-HAND
countersink_angle100.0 DEGREES NOMINAL
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.164 INCHES IN
first_diameter_from_head0.115 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN
NSN5305-00-862-2000
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 546-8188-003 · 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
•
FASTENER LENGTH: 2.294 INCHES NOMINAL IN
•
THREAD LENGTH: 0.407 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
•
FIRST DIAMETER FROM HEAD: 0.115 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER: 1.794 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER: 1.856 INCHES NOMINAL IN
•
HEAD STYLE: OVAL COUNTERSUNK
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
FASTENER LENGTH2.294 INCHES NOMINAL IN
THREAD LENGTH0.407 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
FIRST DIAMETER FROM HEAD0.115 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER1.794 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.164 INCHES IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER1.856 INCHES NOMINAL IN
HEAD STYLEOVAL COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
SECOND DIAMETER FROM HEAD0.139 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.294 INCHES NOMINAL IN
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 546-8188-003?
546-8188-003 is a SCREW,EXTERNALLY RELIEVED BODY.
What is the NSN for 546-8188-003?
546-8188-003 is cataloged in the U.S. Government catalog under NSN 5305-00-862-2000. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
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.