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MILS7839 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

MILS7839: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT COUNTERSUNK, head_height: 0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.371 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN, thread_length: 2.188 INCHES NOMINAL IN, screw_material: STEEL COMP 4130 OR STEEL COMP 4340 OR STEEL COMP 8740. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-057-0491, 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
MILS7839
NSN: 5305-00-057-0491
NIINs: 000570491, 000584012, 001443838, 001443839, 001509202, 001509208, 001509209, 001509210, 001509211, 001509213, 001509259, 001509260, 001509262, 001509263, 001509265, 001509267, 001509268, 001509456, 001509465, 001509517, 001509518, 001509523, 001509563, 001509564, 001509565, 001509567, 001509579, 001509580, 001509582, 001509587, 001509592, 001509595, 001509596, 001510135, 001511311, 001511550, 001512024, 001512025, 001512026, 001512027, 001512032, 001512410, 001512508, 001512519, 001512522, 001512523, 001512524, 001512525, 001512709, 001512721, 001512722, 001512723, 001512724, 001512725, 001512726, 001562326, 001562351, 001562357, 001562358, 001562359, 001562360, 001562362, 001562363, 001562631, 001562632, 001562633, 001562634, 001673630, 001673641, 001673892, 001673893, 001673894, 001673898, 001740584, 001800003, 001800004, 001800099, 001800112, 001800113, 001800180, 001800256, 001800257, 001800285, 001800289, 001801433, 001801434, 001801435, 001803326, 001821344, 001821356, 001821365, 001821366, 001821368, 001821370, 002063526, 002063642, 002063647, 002063649, 002063653, 002063663, 002063686, 002064399, 002064400, 002064717, 002067824, 002070145, 002071158, 002072632, 002088218, 002163190, 002642188, 002715214, 002715222, 002717746, 002718680, 002735359, 002740577, 002740583, 002818527, 002818874, 002818883, 002819655, 002819768, 002820114, 002820115, 002820133, 002820135, 002820138, 002820144, 002820145, 002820146, 002820153, 002820154, 002820185, 002820187, 002824802, 002824803, 002825546, 002828470, 002828681, 002829939, 002861369, 002861766, 002923181, 002925542, 002925573, 002925596, 002925597, 002978646, 002997677, 003252461, 003373149, 005273653, 005275785, 005500129, 005500138, 005500140, 005500141, 005500145, 005500317, 005500514, 005501213, 005501343, 005501352, 005501353, 005501354, 005501355, 005501356, 005501357, 005501517, 005501519, 005501550, 005501552, 005501553, 005503125, 005503126, 005503128, 005503129, 005503130, 005503488, 005503489, 005503490, 005503491, 005509439, 005509440, 005509442, 005516290, 005516291, 005516292, 005590187, 005760578, 005760582, 005766196, 005766617, 006162379, 006166927, 006375440, 006376395, 006377405, 006377907, 006377924, 006377936, 006377940, 006377950, 006377951, 006377953, 006377956, 006378413, 006380573, 006380696, 006386400, 006394803, 006560051, 006602398, 006602399, 006602400, 006806355, 006857887, 006881704, 006882016, 006910157, 007023636, 007026636, 007168311, 007208661, 007208706, 007217275, 007218447, 007220727, 007222677, 007222805, 007223218, 007225782, 007261052, 007270356, 008007211, 008012925, 008013298, 008013340, 008031131, 008035755, 008035756, 008053925, 008112914, 008224516, 008351759, 008801436, 008911778, 009200850, 009257864, 009484151, 009547062, 009547069, 009583409, 009642844, 009822618, 012471676, 013571211, 013571212, 013693568, 013723607, 013983565, 014425413, 014517925, 014517931, 014517937, 014692887
FSC: 5305 — Screws
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
head_styleFLAT COUNTERSUNK
head_height0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.371 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
thread_length2.188 INCHES NOMINAL IN
screw_materialSTEEL COMP 4130 OR STEEL COMP 4340 OR STEEL COMP 8740
fastener_length2.188 INCHES NOMINAL IN
thread_directionRIGHT-HAND
countersink_angle99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
internal_drive_styleCROSS RECESS TYPE 1
end_item_identification4920-01-326-7353
nominal_thread_diameter0.1900 INCHES IN
NSN5305-00-057-0491
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MILS7839 · 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
•
SCREW SURFACE TREATMENT: CADMIUM AND CHROMATE
•
FASTENER LENGTH: 0.516 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6050 MIL SPEC 1ST MATERIAL RESPONSE OR AMS 6300 ASSN STD 2ND MATERIAL RESPONSE
•
THREAD LENGTH: 0.329 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
•
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
SCREW SURFACE TREATMENTCADMIUM AND CHROMATE
FASTENER LENGTH0.516 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6050 MIL SPEC 1ST MATERIAL RESPONSE OR AMS 6300 ASSN STD 2ND MATERIAL RESPONSE
THREAD LENGTH0.329 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
NOMINAL THREAD DIAMETER0.164 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL COMP 8630 OR STEEL COMP 4037
MINIMUM TENSILE STRENGTH125000 POUNDS PER SQUARE INCH LBS
SUBSTITUTES & CROSS-REFERENCES 4
MS24694-S5Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
5305PL0144201Reference document
Same NSN cross-reference
Reference document — Informative reference only
AN509-8R8Reference document
Same NSN cross-reference
Reference document — Secondary reference
AN509-8R8REV2Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MILS7839?
MILS7839 is a SCREW,MACHINE.
What parts can replace MILS7839?
There are 4 known substitutes for MILS7839: MS24694-S5, 5305PL0144201, AN509-8R8 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MILS7839?
MILS7839 is cataloged in the U.S. Government catalog under NSN 5305-00-057-0491. This indicates validated use in U.S. government and defense supply chains.
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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.