PartsTable
Technical Data Sheet
Download PDF

8448319 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

8448319: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP E4340 OVERALL, head_style: FLAT CHAMFER, head_height: 0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN, thread_length: 0.205 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-182-9243, 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
8448319
NSN: 5305-00-182-9243
FSC: 5305 — Screws
CAGE: 19204 — ARMY, UNITED STATES DEPARTMENT OF THE DBA ROCK ISLAND ARSENAL JMTC (USA)
SPECIFICATIONS
materialSTEEL COMP E4340 OVERALL
head_styleFLAT CHAMFER
head_height0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
thread_length0.205 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.510 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN
hardness_rating38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
shoulder_length0.205 INCHES MINIMUM AND 0.210 INCHES MAXIMUM FIRST SHOULDER IN
special_featuresUNDERCUT 0.290 IN. MIN,0.305 IN. MAX FROM BEARING SURFACE OF HEAD IN
thread_directionRIGHT-HAND
NSN5305-00-182-9243
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 8448319 · 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: 0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.510 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 0.205 INCHES MINIMUM AND 0.210 INCHES MAXIMUM FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.214 INCHES MINIMUM AND 0.216 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.205 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
HARDNESS RATING: 38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
•
CRITICALITY CODE JUSTIFICATION: AATN AND AATX
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
FASTENER LENGTH0.510 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN
SHOULDER LENGTH0.205 INCHES MINIMUM AND 0.210 INCHES MAXIMUM FIRST SHOULDER IN
SHOULDER DIAMETER0.214 INCHES MINIMUM AND 0.216 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.205 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
CRITICALITY CODE JUSTIFICATIONAATN AND AATX
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.190 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
Ready to buy 8448319?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 8448319?
8448319 is a SCREW,SHOULDER.
What is the NSN for 8448319?
8448319 is cataloged in the U.S. Government catalog under NSN 5305-00-182-9243. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 8448319

✓ 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.