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5507181 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

5507181: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: HEXAGON EXTENDED WASHER, head_height: 2.625 INCHES NOMINAL IN, thread_length: 22.188 INCHES MINIMUM AND 22.312 INCHES MAXIMUM IN, screw_material: COPPER ALLOY, fastener_length: 22.375 INCHES NOMINAL IN, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-550-7181, 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
5507181
NSN: 5305-00-550-7181
FSC: 5305 — Screws
CAGE: 19204 — ARMY, UNITED STATES DEPARTMENT OF THE DBA ROCK ISLAND ARSENAL JMTC (USA)
SPECIFICATIONS
head_styleHEXAGON EXTENDED WASHER
head_height2.625 INCHES NOMINAL IN
thread_length22.188 INCHES MINIMUM AND 22.312 INCHES MAXIMUM IN
screw_materialCOPPER ALLOY
fastener_length22.375 INCHES NOMINAL IN
special_featuresINTERNALLY THREADED FROM HEAD ENDSTARTING 3.062 IN. BELOW HEAD 22.188 IN. MIN,22.312 IN. MAX THD LG,2 1/2-2ACME-2G-LH THD SIZE AND HEAD COUNTERBORED 3.250 IN. W,0.250 IN. DEEP G
thread_directionRIGHT-HAND
width_between_flats3.844 INCHES MINIMUM AND 3.875 INCHES MAXIMUM IN
extended_washer_diameter4.500 INCHES NOMINAL IN
thread_series_designatorACME
extended_washer_thickness0.375 INCHES NOMINAL IN
nonstandard_thread_pitch_diameter+3.7500 TO 3.7832 INCHES IN
NSN5305-00-550-7181
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5507181 · 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
•
EXTENDED WASHER THICKNESS: 0.375 INCHES NOMINAL IN
•
HEAD HEIGHT: 2.625 INCHES NOMINAL IN
•
FASTENER LENGTH: 22.375 INCHES NOMINAL IN
•
EXTENDED WASHER DIAMETER: 4.500 INCHES NOMINAL IN
•
THREAD LENGTH: 22.188 INCHES MINIMUM AND 22.312 INCHES MAXIMUM IN
•
HEAD STYLE: HEXAGON EXTENDED WASHER
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 3.844 INCHES MINIMUM AND 3.875 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.375 INCHES NOMINAL IN
HEAD HEIGHT2.625 INCHES NOMINAL IN
FASTENER LENGTH22.375 INCHES NOMINAL IN
EXTENDED WASHER DIAMETER4.500 INCHES NOMINAL IN
THREAD LENGTH22.188 INCHES MINIMUM AND 22.312 INCHES MAXIMUM IN
HEAD STYLEHEXAGON EXTENDED WASHER
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS3.844 INCHES MINIMUM AND 3.875 INCHES MAXIMUM IN
SCREW MATERIALCOPPER ALLOY
NONSTANDARD THREAD PITCH DIAMETER+3.7500 TO 3.7832 INCHES 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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5507181?
5507181 is a SCREW,MACHINE.
What is the NSN for 5507181?
5507181 is cataloged in the U.S. Government catalog under NSN 5305-00-550-7181. 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.