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5595242-1 — SCREW,EXTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

5595242-1: SCREW,EXTERNALLY RELIEVED BODY.

The SCREW,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 OVERALL, head_style: FLAT CHAMFER, head_height: 0.305 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN, thread_length: 0.315 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-189-6504, 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
5595242-1
NSN: 5305-01-189-6504
FSC: 5305 — Screws
CAGE: 31442 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN SYSTEMS CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OVERALL
head_styleFLAT CHAMFER
head_height0.305 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
thread_length0.315 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN
fastener_length1.585 INCHES MINIMUM AND 1.595 INCHES MAXIMUM IN
special_featuresHEAD DIMENSIONS AFTER KNURLING
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
internal_drive_styleSLOT
nominal_thread_diameter0.164 INCHES IN
NSN5305-01-189-6504
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5595242-1 · 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
•
FOURTH DIAMETER FROM HEAD: 0.118 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.305 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.585 INCHES MINIMUM AND 1.595 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.315 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
FIRST DIAMETER FROM HEAD: 0.109 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER: 0.375 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
FOURTH DIAMETER FROM HEAD0.118 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN
HEAD HEIGHT0.305 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN
FASTENER LENGTH1.585 INCHES MINIMUM AND 1.595 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.315 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
FIRST DIAMETER FROM HEAD0.109 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER0.375 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.164 INCHES IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER1.115 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5595242-1?
5595242-1 is a SCREW,EXTERNALLY RELIEVED BODY.
What is the NSN for 5595242-1?
5595242-1 is cataloged in the U.S. Government catalog under NSN 5305-01-189-6504. This indicates validated use in U.S. government and defense supply chains.
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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.