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7226659P020 — SCREW,EXTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

7226659P020: SCREW,EXTERNALLY RELIEVED BODY.

The SCREW,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: KNURLED NO. 1, head_height: 0.250 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.562 INCHES NOMINAL IN, thread_length: 0.375 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 5305-01-016-0690, 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
7226659P020
NSN: 5305-01-016-0690
FSC: 5305 — Screws
CAGE: 03538 — LOCKHEED MARTIN CORPORATION DIV RMS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleKNURLED NO. 1
head_height0.250 INCHES NOMINAL IN
thread_class2A A
head_diameter0.562 INCHES NOMINAL IN
thread_length0.375 INCHES NOMINAL IN
fastener_length1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
internal_drive_styleSLOT
nominal_thread_diameter0.250 INCHES IN
first_diameter_from_head0.180 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
NSN5305-01-016-0690
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 7226659P020 · 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: 0.250 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.375 INCHES NOMINAL IN
•
FIRST DIAMETER FROM HEAD: 0.180 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: KNURLED NO. 1
•
THREAD DIRECTION: RIGHT-HAND
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER: 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.250 INCHES NOMINAL IN
FASTENER LENGTH1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN
THREAD LENGTH0.375 INCHES NOMINAL IN
FIRST DIAMETER FROM HEAD0.180 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEKNURLED NO. 1
THREAD DIRECTIONRIGHT-HAND
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY1
SURFACE TREATMENTPASSIVATE OVERALL
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 1
58-21-212-24Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7226659P020?
7226659P020 is a SCREW,EXTERNALLY RELIEVED BODY.
What parts can replace 7226659P020?
There is 1 known substitute for 7226659P020: 58-21-212-24. Substitute compatibility should be verified for your specific system.
What is the NSN for 7226659P020?
7226659P020 is cataloged in the U.S. Government catalog under NSN 5305-01-016-0690. 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.