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2660561 — SCREW,EXTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

2660561: SCREW,EXTERNALLY RELIEVED BODY.

The SCREW,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT CHAMFER, head_height: 0.130 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 0.220 INCHES NOMINAL IN, thread_length: 0.290 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-034-1015, 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
2660561
NSN: 5305-01-034-1015
FSC: 5305 — Screws
CAGE: 06848 — HONEYWELL INTERNATIONAL INC DIV AEROSPACE-SOUTH BEND (BENDIX DR) (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT CHAMFER
head_height0.130 INCHES NOMINAL IN
thread_class3A A
head_diameter0.220 INCHES NOMINAL IN
thread_length0.290 INCHES NOMINAL IN
fastener_length0.680 INCHES NOMINAL IN
thread_directionRIGHT-HAND
nominal_thread_diameter0.138 INCHES IN
first_diameter_from_head0.140 INCHES NOMINAL IN
thread_quantity_per_inch32
thread_series_designatorUNJC
NSN5305-01-034-1015
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2660561 · 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: 0.130 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.680 INCHES NOMINAL IN
•
THREAD LENGTH: 0.290 INCHES NOMINAL IN
•
FIRST DIAMETER FROM HEAD: 0.140 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
•
HEAD STYLE: FLAT CHAMFER
•
THREAD DIRECTION: RIGHT-HAND
•
SECOND DIAMETER FROM HEAD: 0.070 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.130 INCHES NOMINAL IN
FASTENER LENGTH0.680 INCHES NOMINAL IN
THREAD LENGTH0.290 INCHES NOMINAL IN
FIRST DIAMETER FROM HEAD0.140 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.138 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
SECOND DIAMETER FROM HEAD0.070 INCHES NOMINAL IN
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY2
THREAD CLASS3A A
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 2660561?
2660561 is a SCREW,EXTERNALLY RELIEVED BODY.
What is the NSN for 2660561?
2660561 is cataloged in the U.S. Government catalog under NSN 5305-01-034-1015. 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.