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MS35206 screw — pan

Screw, Machine, Pan Head, Cross-Recessed, Carbon Steel, Cadmium Plated, UNC-2A, from MS35206 Rev. H. Every row below is transcribed from the standard and has its own link.

MS35206 at a glance

MS35206, screw, machine, pan head, cross-recessed, carbon steel, cadmium plated, unc-2a
MS35206
MS35206 engineering drawing with dimensions
Engineering drawing · dimensions in inches

Specification

ItemValue
Headpan
Drivecross-recess (MS9006)
Thread seriescoarse (UNC-2A)
MaterialCarbon steel, in accordance with the procurement specification FF-S-92.
Heat treatmentTensile load based on 60,000 psi minimum ultimate tensile strength; load pounds calculated from the stress areas of FED-STD-H28/2.
ItemValue
FinishCadmium plate QQ-P-416 Type II Class 3, or (Amendment 1) zinc coating ASTM B633-78 Fe/Zn 5 (5 micron) Type II.
ProcurementFF-S-92
Thread specificationFED-STD-H28/2
StatusRev. H (14 Jun 1991) with Amendment 1 (29 Sep 1999, adds zinc coating option). Notice 1 (29 Feb 2000): canceled and superseded by NASM35206; the part numbers are identical (MS35206-201 = NASM35206-201).

Dimensions by size

Dimension, in.0860-56 UNC-2A.1120-40 UNC-2A.1380-32 UNC-2A.1640-32 UNC-2A.1900-24 UNC-2A.2500-20 UNC-2A.3125-18 UNC-2A.3750-16 UNC-2A
D body dia.0717 – .0860.0925 – .1120.1141 – .1380.1399 – .1640.1586 – .1900.2127 – .2500.2712 – .3125.3287 – .3750
A head dia.1550 – .1670.2050 – .2190.2560 – .2700.3060 – .3220.3570 – .3730.4730 – .4920.5940 – .6150.7160 – .7400
H head height.0530 – .0620.0700 – .0800.0870 – .0970.1050 – .1150.1220 – .1330.1620 – .1750.2030 – .2180.2440 – .2610
P head radius min.0100.0100.0150.0150.0200.0350.0400.0400
R fillet max.0130.0170.0210.0250.0290.0380.0470.0560
min tensile lbf2203605458401050190031404650

Minimum – maximum as tabulated in MS35206 Rev. H; letters as on the standard's drawing.

Part numbers and lengths

Every part number of MS35206 Rev. H, by thread size, each with its own link.

.0860-56 UNC-2A13 part numbers

Part no.Length, inTol.
MS35206-201.125+0/-.031
MS35206-202.188+0/-.031
MS35206-203.250+0/-.031
MS35206-204.312+0/-.031
MS35206-205.375+0/-.031
MS35206-206.438+0/-.031
MS35206-207.500+0/-.031
MS35206-208.625+0/-.031
MS35206-209.750+0/-.031
MS35206-210.875+0/-.031
MS35206-320.562+0/-.031
MS35206-3211.000+0/-.031
MS35206-3221.500+0/-.062

.1120-40 UNC-2A17 part numbers

Part no.Length, inTol.
MS35206-211.125+0/-.031
MS35206-212.188+0/-.031
MS35206-213.250+0/-.031
MS35206-214.312+0/-.031
MS35206-215.375+0/-.031
MS35206-216.438+0/-.031
MS35206-217.500+0/-.031
MS35206-218.625+0/-.031
MS35206-219.750+0/-.031
MS35206-220.875+0/-.031
MS35206-2211.000+0/-.031
MS35206-2221.250+0/-.062
MS35206-2231.500+0/-.062
MS35206-323.562+0/-.031
MS35206-3241.125+0/-.062
MS35206-3251.375+0/-.062
MS35206-3261.750+0/-.062

.1380-32 UNC-2A21 part numbers

Part no.Length, inTol.
MS35206-224.125+0/-.031
MS35206-225.188+0/-.031
MS35206-226.250+0/-.031
MS35206-227.312+0/-.031
MS35206-228.375+0/-.031
MS35206-229.438+0/-.031
MS35206-230.500+0/-.031
MS35206-231.625+0/-.031
MS35206-232.750+0/-.031
MS35206-233.875+0/-.031
MS35206-2341.000+0/-.031
MS35206-2351.250+0/-.062
MS35206-2361.500+0/-.062
MS35206-2371.750+0/-.062
MS35206-2382.000+0/-.062
MS35206-327.562+0/-.031
MS35206-3281.125+0/-.062
MS35206-3291.375+0/-.062
MS35206-3302.250+0/-.094
MS35206-3611.875+0/-.062
MS35206-3622.500+0/-.094

.1640-32 UNC-2A25 part numbers

Part no.Length, inTol.
MS35206-239.125+0/-.031
MS35206-240.188+0/-.031
MS35206-241.250+0/-.031
MS35206-242.312+0/-.031
MS35206-243.375+0/-.031
MS35206-244.438+0/-.031
MS35206-245.500+0/-.031
MS35206-246.625+0/-.031
MS35206-247.750+0/-.031
MS35206-248.875+0/-.031
MS35206-2491.000+0/-.031
MS35206-2501.250+0/-.062
MS35206-2511.500+0/-.062
MS35206-2521.750+0/-.062
MS35206-2532.000+0/-.062
MS35206-2542.250+0/-.094
MS35206-2552.500+0/-.094
MS35206-2562.750+0/-.094
MS35206-2573.000+0/-.094
MS35206-331.562+0/-.031
MS35206-3321.125+0/-.062
MS35206-3331.375+0/-.062
MS35206-3341.875+0/-.062
MS35206-3353.250+0/-.094
MS35206-3363.500+0/-.094

.1900-24 UNC-2A24 part numbers

Part no.Length, inTol.
MS35206-258.188+0/-.031
MS35206-259.250+0/-.031
MS35206-260.312+0/-.031
MS35206-261.375+0/-.031
MS35206-262.438+0/-.031
MS35206-263.500+0/-.031
MS35206-264.625+0/-.031
MS35206-265.750+0/-.031
MS35206-266.875+0/-.031
MS35206-2671.000+0/-.031
MS35206-2681.250+0/-.062
MS35206-2691.500+0/-.062
MS35206-2701.750+0/-.062
MS35206-2712.000+0/-.062
MS35206-2722.250+0/-.094
MS35206-2732.500+0/-.094
MS35206-2742.750+0/-.094
MS35206-2753.000+0/-.094
MS35206-337.562+0/-.031
MS35206-3381.125+0/-.062
MS35206-3391.375+0/-.062
MS35206-3401.875+0/-.062
MS35206-3413.250+0/-.094
MS35206-3423.500+0/-.094

.2500-20 UNC-2A22 part numbers

Part no.Length, inTol.
MS35206-276.312+0/-.031
MS35206-277.375+0/-.031
MS35206-278.438+0/-.031
MS35206-279.500+0/-.031
MS35206-280.625+0/-.031
MS35206-281.750+0/-.031
MS35206-282.875+0/-.031
MS35206-2831.000+0/-.031
MS35206-2841.250+0/-.062
MS35206-2851.500+0/-.062
MS35206-2861.750+0/-.062
MS35206-2872.000+0/-.062
MS35206-2882.250+0/-.094
MS35206-2892.500+0/-.094
MS35206-2902.750+0/-.094
MS35206-2913.000+0/-.094
MS35206-343.562+0/-.031
MS35206-3441.125+0/-.062
MS35206-3451.375+0/-.062
MS35206-3461.875+0/-.062
MS35206-3473.250+0/-.094
MS35206-3483.500+0/-.094

.3125-18 UNC-2A21 part numbers

Part no.Length, inTol.
MS35206-292.375+0/-.031
MS35206-293.438+0/-.031
MS35206-294.500+0/-.031
MS35206-295.625+0/-.031
MS35206-296.750+0/-.031
MS35206-297.875+0/-.031
MS35206-2981.000+0/-.031
MS35206-2991.250+0/-.062
MS35206-3001.500+0/-.062
MS35206-3011.750+0/-.062
MS35206-3022.000+0/-.062
MS35206-3032.250+0/-.094
MS35206-3042.500+0/-.094
MS35206-3052.750+0/-.094
MS35206-3063.000+0/-.094
MS35206-349.562+0/-.031
MS35206-3501.125+0/-.062
MS35206-3511.375+0/-.062
MS35206-3521.875+0/-.062
MS35206-3533.250+0/-.094
MS35206-3543.500+0/-.094

.3750-16 UNC-2A19 part numbers

Part no.Length, inTol.
MS35206-307.500+0/-.031
MS35206-308.625+0/-.031
MS35206-309.750+0/-.031
MS35206-310.875+0/-.031
MS35206-3111.000+0/-.031
MS35206-3121.250+0/-.062
MS35206-3131.500+0/-.062
MS35206-3141.750+0/-.062
MS35206-3152.000+0/-.062
MS35206-3162.250+0/-.094
MS35206-3172.500+0/-.094
MS35206-3182.750+0/-.094
MS35206-3193.000+0/-.094
MS35206-355.562+0/-.031
MS35206-3561.125+0/-.062
MS35206-3571.375+0/-.062
MS35206-3581.875+0/-.062
MS35206-3593.250+0/-.094
MS35206-3603.500+0/-.094

Part number

How a MS35206 part number is built, segment by segment

What each code means

PartMeaning
FormatMS35206-<dash number>[Z]
ExampleMS35206-201 = pan head cross-recessed carbon steel, cadmium plated, .086-56 UNC-2A, .125 long; MS35206-201Z = same, zinc coated
Length tolerance, .125 to 1.000+.000/-.031
Length tolerance, 1.125 to 2.000+.000/-.062
Length tolerance, 2.250 to 3.500+.000/-.094
DashDash number from Table I selects thread size and length (201 to 362); dash numbers 320 and above are manufacturer non-stock production items
(none)Coating: cadmium plated
ZCoating: zinc coated (Amendment 1)

Notes from the standard

  • Threads per FED-STD-H28/2, acceptability per FED-STD-H28/20 system 21. Screws 2.000 inches long and shorter have complete threads extending to within two threads of the bearing surface of the head or closer if practicable; longer screws have a minimum thread length of 1.750 inches.
  • Recess per MS9006. All dimensions in inches. In case of conflict the text of the standard takes precedence over the references cited.
  • Dash numbers marked 1/ in the table are manufacturer non-stock production items (flagged nonstock in the data).
  • Head diameter, head height and body diameter columns are read from a scanned table; digits of the head height for the .086 size print as 0620/0530 (read .0620/.0530).
  • Two change-mark circles (H) in the table flag dash numbers 254 (.164, 2.250) and 362 (.138, 2.500) as changed in Rev. H.

Related

CalculatorPart number cross-referenceType any MS35206 number and land on its row.GuideScrewsThe family side by side.Data sheetMS51957Screw, Machine, Pan Head, Cross-Recessed, Corrosion Resistant Steel, UNC-2AData sheetMS35190Screw, Machine, 82 Degree Flat Countersunk Head, Cross-Recessed, Carbon Steel, Cadmium Plated, 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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