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123LM10019-5 — BOLT,INTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

123LM10019-5: BOLT,INTERNALLY RELIEVED BODY.

The BOLT,INTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL COMP E4340 OVERALL, head_height: 0.187 INCHES NOMINAL IN, thread_class: 3A A, thread_length: 0.513 INCHES NOMINAL IN, fastener_length: 5.344 INCHES NOMINAL IN, hardness_rating: 39.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-075-3788, 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
123LM10019-5
NSN: 5306-00-075-3788
FSC: 5306 — Bolts
CAGE: 79RG9 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP E4340 OVERALL
head_height0.187 INCHES NOMINAL IN
thread_class3A A
thread_length0.513 INCHES NOMINAL IN
fastener_length5.344 INCHES NOMINAL IN
hardness_rating39.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
shoulder_length4.492 INCHES MINIMUM AND 4.502 INCHES MAXIMUM IN
style_designatorCONCENTRIC HOLE UNTHREADED
thread_directionRIGHT-HAND
shoulder_diameter0.9945 INCHES MINIMUM AND 0.9955 INCHES MAXIMUM IN
concentric_hole_depth4.149 INCHES MINIMUM AND 4.180 INCHES MAXIMUM IN
nominal_thread_diameter0.500 INCHES IN
NSN5306-00-075-3788
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 123LM10019-5 · 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: 0.187 INCHES NOMINAL IN
•
FASTENER LENGTH: 5.344 INCHES NOMINAL IN
•
CONCENTRIC HOLE DEPTH: 4.149 INCHES MINIMUM AND 4.180 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.513 INCHES NOMINAL IN
•
HARDNESS RATING: 39.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
•
SHANK UNTHREADED HOLE DIAMETER: 0.104 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN
•
STYLE DESIGNATOR: CONCENTRIC HOLE UNTHREADED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.187 INCHES NOMINAL IN
FASTENER LENGTH5.344 INCHES NOMINAL IN
CONCENTRIC HOLE DEPTH4.149 INCHES MINIMUM AND 4.180 INCHES MAXIMUM IN
THREAD LENGTH0.513 INCHES NOMINAL IN
HARDNESS RATING39.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
SHANK UNTHREADED HOLE DIAMETER0.104 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN
STYLE DESIGNATORCONCENTRIC HOLE UNTHREADED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.500 INCHES IN
THREAD DIRECTIONRIGHT-HAND
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
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 123LM10019-5?
123LM10019-5 is a BOLT,INTERNALLY RELIEVED BODY.
What is the NSN for 123LM10019-5?
123LM10019-5 is cataloged in the U.S. Government catalog under NSN 5306-00-075-3788. 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.