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5524991-1 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

5524991-1: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT CHAMFER, head_height: 0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 1.107 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN, thread_length: 1.640 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-340-9058, 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
5524991-1
NSN: 5305-01-340-9058
FSC: 5305 — Screws
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT CHAMFER
head_height0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
thread_class3A A
head_diameter1.107 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
thread_length1.640 INCHES NOMINAL IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length4.470 INCHES MINIMUM AND 4.530 INCHES MAXIMUM IN
shoulder_length2.850 INCHES MINIMUM AND 2.870 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.771 INCHES MINIMUM AND 0.791 INCHES MAXIMUM FIRST SHOULDER IN
surface_treatmentZINC AND CHROMATE OVERALL
NSN5305-01-340-9058
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5524991-1 · 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
•
WIDTH ACROSS FLATS: 0.625 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
•
FASTENER LENGTH: 4.470 INCHES MINIMUM AND 4.530 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 2.850 INCHES MINIMUM AND 2.870 INCHES MAXIMUM FIRST SHOULDER IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-Z-325,TYPE 3,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SHOULDER DIAMETER: 0.771 INCHES MINIMUM AND 0.791 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 1.640 INCHES NOMINAL IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.625 INCHES NOMINAL IN
HEAD HEIGHT0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
FASTENER LENGTH4.470 INCHES MINIMUM AND 4.530 INCHES MAXIMUM IN
SHOULDER LENGTH2.850 INCHES MINIMUM AND 2.870 INCHES MAXIMUM FIRST SHOULDER IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-Z-325,TYPE 3,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SHOULDER DIAMETER0.771 INCHES MINIMUM AND 0.791 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH1.640 INCHES NOMINAL IN
SHOULDER SHAPEROUND FIRST SHOULDER
MATERIAL DOCUMENT AND CLASSIFICATIONSAE,GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.750 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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5524991-1?
5524991-1 is a SCREW,SHOULDER.
What is the NSN for 5524991-1?
5524991-1 is cataloged in the U.S. Government catalog under NSN 5305-01-340-9058. 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.