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MS27039 screw — pan

Screw, Machine, Pan Head, Structural, Cross Recessed, from MS27039 Rev. F. Every row below is transcribed from the standard and has its own link.

MS27039 at a glance

MS27039, screw, machine, pan head, structural, cross recessed
MS27039
MS27039 engineering drawing with dimensions
Engineering drawing · dimensions in inches

Specification

ItemValue
Headpan
Drivecross-recess (MS9006)
Thread seriesUNC-3A (.164) and UNF-3A (all other sizes)
MaterialAluminum alloy 2024 (QQ-A-430 temper 2024-D or QQ-A-225/6 T4); manganese bronze UNS C67000 (ASTM B138); alloy steel 8630 (MIL-S-7839, 26-32 HRC), 8740 or 4130 (MIL-S-6049); heat and corrosion resistant steel A286 (AMS 5731 or AMS 5732).
Heat treatmentTensile: aluminum 62,000 psi min; manganese bronze 85,000 psi min; alloy steel 125,000 to 145,000 psi; CRES 130,000 psi min.
ItemValue
FinishAluminum: anodize MIL-A-8625 Type I or II. Manganese bronze: cadmium plate QQ-P-416 Type II Class 3, or uncoated. Alloy steel: cadmium plate QQ-P-416 Type II Class 2. CRES: passivate QQ-P-35 (verification per MIL-STD-753 Method 102).
ProcurementMIL-S-7839
Thread specificationFED-STD-H28/2
StatusRev. F (15 Nov 1995). Notice 1 (27 Oct 1999) and Notice 2 (17 Jan 2006): canceled and superseded by NASM27039; the part numbers are identical (MS27039DD0809 = NASM27039DD0809). Supersedes MS27039E.

Dimensions by size

Dimension, in.164-32 UNC-3A.190-32 UNF-3A.250-28 UNF-3A.3125-24 UNF-3A.375-24 UNF-3A.4375-20 UNF-3A.500-20 UNF-3A
A shank dia.1610 – .1640.1860 – .1890.2460 – .2490.3085 – .3115.3710 – .3740.4325 – .4365.4950 – .4990
B head dia.306 – .322.357 – .373.473 – .492.594 – .615.716 – .740.838 – .868.958 – .987
C head height.105 – .115.122 – .133.162 – .175.203 – .218.244 – .261.286 – .304.327 – .348
R rad.010 – .020.010 – .020.010 – .020.010 – .020.010 – .020.015 – .025.020 – .030
U chamfer.032.032.032.032.032.047.047
max eccentricityhead to shank .020, recess to shank .016head to shank .024, recess to shank .020head to shank .030, recess to shank .024head to shank .036, recess to shank .030head to shank .042, recess to shank .030head to shank .048, recess to shank .030head to shank .056, recess to shank .030
ultimate tensile lbfaluminum alloy 868, manganese bronze 1190, alloy steel 1750, cres 1750aluminum alloy 1240, manganese bronze 1700, alloy steel 2500, cres 2500aluminum alloy 2260, manganese bronze 3090, alloy steel 4550, cres 4550aluminum alloy 3600, manganese bronze 4930, alloy steel 7250, cres 7250aluminum alloy 5440, manganese bronze 7460, alloy steel 11000, cres 11000aluminum alloy 7360, manganese bronze 10100, alloy steel 14800, cres 14800aluminum alloy 9900, manganese bronze 13600, alloy steel 20000, cres 20000
ultimate double shear lbfaluminum alloy 1570, manganese bronze 2150, alloy steel 3170, cres 3170aluminum alloy 2110, manganese bronze 2890, alloy steel 4250, cres 4250aluminum alloy 3650, manganese bronze 5010, alloy steel 7360, cres 7360aluminum alloy 5700, manganese bronze 7820, alloy steel 11500, cres 11500aluminum alloy 8220, manganese bronze 11300, alloy steel 16600, cres 16600aluminum alloy 11200, manganese bronze 15300, alloy steel 22500, cres 22500aluminum alloy 14700, manganese bronze 20000, alloy steel 29400, cres 29400

Minimum – maximum as tabulated in MS27039 Rev. F; letters as on the standard's drawing.

Part numbers and lengths

Every part number of MS27039 Rev. F, by thread size, each with its own link. * = the material code: build the full number below.

.164-32 UNC-3A35 part numbers · tolerance +.032/-.015

Part no.Length, in
MS27039*0804.281
MS27039*0805.344
MS27039*0806.406
MS27039*0807.469
MS27039*0808.531
MS27039*0809.594
MS27039*0810.656
MS27039*0811.719
MS27039*0812.781
MS27039*0813.844
MS27039*0814.906
MS27039*0815.969
MS27039*08161.031
MS27039*08171.094
MS27039*08181.156
MS27039*08191.219
MS27039*08201.281
MS27039*08211.344
MS27039*08221.406
MS27039*08231.469
MS27039*08241.531
MS27039*08251.594
MS27039*08261.656
MS27039*08271.719
MS27039*08281.781
MS27039*08291.844
MS27039*08301.906
MS27039*08311.969
MS27039*08322.031
MS27039*08332.094
MS27039*08342.156
MS27039*08352.219
MS27039*08362.281
MS27039*08372.344
MS27039*08382.406

.190-32 UNF-3A53 part numbers · tolerance +.032/-.015

Part no.Length, in
MS27039*1-04.281
MS27039*1-05.344
MS27039*1-06.406
MS27039*1-07.469
MS27039*1-08.531
MS27039*1-09.594
MS27039*1-10.656
MS27039*1-11.719
MS27039*1-12.781
MS27039*1-13.844
MS27039*1-14.906
MS27039*1-15.969
MS27039*1-161.031
MS27039*1-171.094
MS27039*1-181.156
MS27039*1-191.219
MS27039*1-201.281
MS27039*1-211.344
MS27039*1-221.406
MS27039*1-231.469
MS27039*1-241.531
MS27039*1-251.594
MS27039*1-261.656
MS27039*1-271.719
MS27039*1-281.781
MS27039*1-291.844
MS27039*1-301.906
MS27039*1-311.969
MS27039*1-322.031
MS27039*1-332.094
MS27039*1-342.156
MS27039*1-352.219
MS27039*1-362.281
MS27039*1-372.344
MS27039*1-382.406
MS27039*1-392.469
MS27039*1-402.531
MS27039*1-412.594
MS27039*1-422.656
MS27039*1-432.719
MS27039*1-442.781
MS27039*1-452.844
MS27039*1-462.906
MS27039*1-472.969
MS27039*1-483.031
MS27039*1-493.094
MS27039*1-503.156
MS27039*1-513.219
MS27039*1-523.281
MS27039*1-533.344
MS27039*1-543.406
MS27039*1-553.469
MS27039*1-563.531

.250-28 UNF-3A45 part numbers · tolerance +.032/-.015

Part no.Length, in
MS27039*4-04.281
MS27039*4-05.344
MS27039*4-06.406
MS27039*4-07.469
MS27039*4-08.531
MS27039*4-09.594
MS27039*4-10.656
MS27039*4-11.719
MS27039*4-12.781
MS27039*4-13.844
MS27039*4-14.906
MS27039*4-15.969
MS27039*4-161.031
MS27039*4-171.094
MS27039*4-181.156
MS27039*4-191.219
MS27039*4-201.281
MS27039*4-211.344
MS27039*4-221.406
MS27039*4-231.469
MS27039*4-241.531
MS27039*4-251.594
MS27039*4-261.656
MS27039*4-271.719
MS27039*4-281.781
MS27039*4-291.844
MS27039*4-301.906
MS27039*4-311.969
MS27039*4-322.031
MS27039*4-332.094
MS27039*4-342.156
MS27039*4-352.219
MS27039*4-362.281
MS27039*4-372.344
MS27039*4-382.406
MS27039*4-392.469
MS27039*4-402.531
MS27039*4-412.594
MS27039*4-422.656
MS27039*4-432.719
MS27039*4-442.781
MS27039*4-452.844
MS27039*4-462.906
MS27039*4-472.969
MS27039*4-483.031

.3125-24 UNF-3A44 part numbers · tolerance +.032/-.015

Part no.Length, in
MS27039*5-05.359
MS27039*5-06.422
MS27039*5-07.484
MS27039*5-08.547
MS27039*5-09.609
MS27039*5-10.672
MS27039*5-11.734
MS27039*5-12.797
MS27039*5-13.859
MS27039*5-14.922
MS27039*5-15.984
MS27039*5-161.047
MS27039*5-171.109
MS27039*5-181.172
MS27039*5-191.234
MS27039*5-201.297
MS27039*5-211.359
MS27039*5-221.422
MS27039*5-231.484
MS27039*5-241.547
MS27039*5-251.609
MS27039*5-261.672
MS27039*5-271.734
MS27039*5-281.797
MS27039*5-291.859
MS27039*5-301.922
MS27039*5-311.984
MS27039*5-322.047
MS27039*5-332.109
MS27039*5-342.172
MS27039*5-352.234
MS27039*5-362.297
MS27039*5-372.359
MS27039*5-382.422
MS27039*5-392.484
MS27039*5-402.547
MS27039*5-412.609
MS27039*5-422.672
MS27039*5-432.734
MS27039*5-442.797
MS27039*5-452.859
MS27039*5-462.922
MS27039*5-472.984
MS27039*5-483.047

.375-24 UNF-3A44 part numbers · tolerance +.032/-.015

Part no.Length, in
MS27039*6-05.406
MS27039*6-06.469
MS27039*6-07.531
MS27039*6-08.594
MS27039*6-09.656
MS27039*6-10.719
MS27039*6-11.781
MS27039*6-12.844
MS27039*6-13.906
MS27039*6-14.969
MS27039*6-151.031
MS27039*6-161.094
MS27039*6-171.156
MS27039*6-181.219
MS27039*6-191.281
MS27039*6-201.344
MS27039*6-211.406
MS27039*6-221.469
MS27039*6-231.531
MS27039*6-241.594
MS27039*6-251.656
MS27039*6-261.719
MS27039*6-271.781
MS27039*6-281.844
MS27039*6-291.906
MS27039*6-301.969
MS27039*6-312.031
MS27039*6-322.094
MS27039*6-332.156
MS27039*6-342.219
MS27039*6-352.281
MS27039*6-362.344
MS27039*6-372.406
MS27039*6-382.469
MS27039*6-392.531
MS27039*6-402.594
MS27039*6-412.656
MS27039*6-422.719
MS27039*6-432.781
MS27039*6-442.844
MS27039*6-452.906
MS27039*6-462.969
MS27039*6-473.031
MS27039*6-483.094

.4375-20 UNF-3A43 part numbers · tolerance +.032/-.015

Part no.Length, in
MS27039*7-06.453
MS27039*7-07.516
MS27039*7-08.578
MS27039*7-09.641
MS27039*7-10.703
MS27039*7-11.766
MS27039*7-12.828
MS27039*7-13.891
MS27039*7-14.953
MS27039*7-151.016
MS27039*7-161.078
MS27039*7-171.141
MS27039*7-181.203
MS27039*7-191.266
MS27039*7-201.328
MS27039*7-211.391
MS27039*7-221.453
MS27039*7-231.516
MS27039*7-241.578
MS27039*7-251.641
MS27039*7-261.703
MS27039*7-271.766
MS27039*7-281.828
MS27039*7-291.891
MS27039*7-301.953
MS27039*7-312.016
MS27039*7-322.078
MS27039*7-332.141
MS27039*7-342.203
MS27039*7-352.266
MS27039*7-362.328
MS27039*7-372.391
MS27039*7-382.453
MS27039*7-392.516
MS27039*7-402.578
MS27039*7-412.641
MS27039*7-422.703
MS27039*7-432.766
MS27039*7-442.828
MS27039*7-452.891
MS27039*7-462.953
MS27039*7-473.016
MS27039*7-483.078

.500-20 UNF-3A43 part numbers · tolerance +.032/-.015

Part no.Length, in
MS27039*8-06.453
MS27039*8-07.516
MS27039*8-08.578
MS27039*8-09.641
MS27039*8-10.703
MS27039*8-11.766
MS27039*8-12.828
MS27039*8-13.891
MS27039*8-14.953
MS27039*8-151.016
MS27039*8-161.078
MS27039*8-171.141
MS27039*8-181.203
MS27039*8-191.266
MS27039*8-201.328
MS27039*8-211.391
MS27039*8-221.453
MS27039*8-231.516
MS27039*8-241.578
MS27039*8-251.641
MS27039*8-261.703
MS27039*8-271.766
MS27039*8-281.828
MS27039*8-291.891
MS27039*8-301.953
MS27039*8-312.016
MS27039*8-322.078
MS27039*8-332.141
MS27039*8-342.203
MS27039*8-352.266
MS27039*8-362.328
MS27039*8-372.391
MS27039*8-382.453
MS27039*8-392.516
MS27039*8-402.578
MS27039*8-412.641
MS27039*8-422.703
MS27039*8-432.766
MS27039*8-442.828
MS27039*8-452.891
MS27039*8-462.953
MS27039*8-473.016
MS27039*8-483.078

Part number

How a MS27039 part number is built, segment by segment

What each code means

PartMeaning
FormatMS27039<material code><dash number>
ExampleMS27039DD0809 = .164-32 UNC-3A, .594 long, anodized aluminum; MS27039-0809 = same, cadmium plated alloy steel; MS27039C0809 = CRES; MS27039B0809 = uncoated bronze; MS27039BP0809 = cadmium plated bronze
Length tolerance, length+.032/-.015
Length tolerance, grip+/-.015
DDMaterial: anodized aluminum alloy
BPMaterial: cadmium plated manganese bronze
BMaterial: uncoated manganese bronze
-Material: cadmium plated alloy steel
CMaterial: heat and corrosion resistant steel
Dash.164-32: four digits (0804 to 0838: 08 = thread, last two = length step). Other sizes: <size digit>-<length step>: 1- = .190-32, 4- = .250-28, 5- = .3125-24, 6- = .375-24, 7- = .4375-20, 8- = .500-20

Notes from the standard

  • Dimensions to be met after plating. Shank diameter may be .001 oversize for a maximum distance of .031 adjacent to the head. Chamfer plus incomplete thread not to exceed two pitches; maximum 2 imperfect threads.
  • Screws free from burrs and sharp edges. Recess per MS9006.
  • Short screws listed above the line in Table III (footnote 1) shall be threaded to within .032 +.000/-.032 of the head (no grip tabulated).
  • Head marking: basic part number and dash number (basic part number optional for the .164-32 size); material: aluminum none, bronze B, alloy steel dash, CRES C; manufacturer trade mark.
  • Table I merged cells: R .020/.010 and U .032 read as applying to sizes .164 to .375, .025/.015 and .047 to .4375, .030/.020 to .500; recess-to-shank eccentricity .030 read as applying to .3125 and larger.

Related

CalculatorPart number cross-referenceType any MS27039 number and land on its row.GuideScrewsThe family side by side.Data sheetMS24694Screw, Machine, Flat Countersunk Head, 100 Degree, Structural, Cross Recessed, UNC-3A and UNF-3AData sheetMS51957Screw, Machine, Pan Head, Cross-Recessed, Corrosion Resistant Steel, UNC-2A

Sources

Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.
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