The Aviation PointTechnical data sheet · theaviationpoint.com/parts/screws/ms35214/
MS35214 screw — pan
Screw, Machine, Pan Head, Cross-Recessed, Brass, UNC-2A, from MS35214 Rev. D. Every row below is transcribed from the standard and has its own link.
MS35214 at a glance
MS35214Engineering drawing · dimensions in inches
Specification
Item
Value
Head
pan
Drive
cross-recess (MS9006)
Thread series
coarse (UNC-2A)
Material
Brass per QQ-B-613, QQ-B-626 or QQ-W-321 (Amendment 1: ASTM B16, ASTM B36/B36M, ASTM B121/B121M or ASTM B124). Minimum ultimate tensile strength 55,000 psi.
Item
Value
Finish
Black chemical finish per MIL-F-495; or cadmium plate QQ-P-416 Type II Class 3 when required (letter C after the dash number).
Procurement
FF-S-92
Thread specification
FED-STD-H28/2
Status
Rev. D (31 Dec 1987) with Amendment 1 (5 Oct 1992). Notice 1 (29 Feb 2000): canceled and superseded by NASM35214; the part numbers are identical (MS35214-1 = NASM35214-1). Approved 25 Jun 1953. Lined-out dash numbers (117 to 137) are inactive for new design after 12 Jun 1974; dash numbers 106 to 116 are non-preferred for new design.
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
nominal
#2
#4
#6
#8
#10
1/4
5/16
3/8
D body dia
.0717 – .0860
.0925 – .1120
.1141 – .1380
.1399 – .1640
.1586 – .1900
.2127 – .2500
.2712 – .3125
.3287 – .3750
A head dia
.155 – .167
.205 – .219
.256 – .270
.306 – .322
.357 – .373
.473 – .492
.594 – .615
.716 – .740
H head height
.053 – .062
.070 – .080
.087 – .097
.105 – .115
.122 – .133
.162 – .175
.203 – .218
.244 – .261
P head radius min
.010
.010
.015
.015
.020
.035
.040
.040
R fillet max
.013
.017
.021
.025
.029
.038
.047
.056
driver size
1
1
2
2
2
3
4
4
min tensile lbf
200
330
500
770
960
1750
2800
4260
threads per inch
56
40
32
32
24
20
18
16
Minimum – maximum as tabulated in MS35214 Rev. D; letters as on the standard's drawing.
Part numbers and lengths
Every part number of MS35214 Rev. D, by thread size, each with its own link.
.0860-56 UNC-2A10 part numbers · tolerance +.00/-.03
MS35214-1 = brass, cross recessed, black chemical finish, .0860-56 UNC-2A, .125 long; MS35214-1C = same with cadmium plate
Length tolerance, .12 to 1.00
+.00/-.03
Length tolerance, 1.12 to 2.00
+.00/-.06
Length tolerance, 2.25 to 3.00
+.00/-.09
Dash
Dash number from Table I selects thread size and length (1 to 137)
(none)
Finish: black chemical finish per MIL-F-495
C
Finish: cadmium plate per QQ-P-416 Type II Class 3
Notes from the standard
Lengths are printed to two decimals; the sheet example gives the .12 length as .125 (the .56, 1.12, 1.38 and 1.88 lengths are 9/16, 1-1/8, 1-3/8 and 1-7/8).
Driver size (Phillips) per sheet: 1 for #2 and #4; 2 for #6, #8 and #10; 3 for 1/4; 4 for 5/16 and 3/8. Recess per MS9006.
Full form threads extend to within 2 threads or less of the head bearing surface for lengths through 2.00 in; longer lengths have a minimum full form thread length of 1.50 in.
On the sheet, lined-out dash numbers are inactive for new design after 12 Jun 1974 (117 to 137); dash numbers 106 to 116 are non-preferred for new design. All are included here with their status.
Amendment 1 changes the head radius P from a minimum to a reference value.
Interchangeability (Table II, sheet 3): screws covered by dash numbers in MS35212, MS35229, MS35231 and, in part, AN515 are canceled after 17 Dec 1962; the canceled screws cannot always replace the new ones and are used until stock is depleted. MS35212 screws are superseded by MS35214 screws with the same dash numbers; AN515 dash numbers with an "R" in place of the "-" are superseded by the same MS35214 dash numbers as those with the "-". "no replacement" = no superseding screw. The AN515 suffix is printed without the AN515 prefix on the sheet.
MS35214 Rev. D, 31 Dec 1987 — Screw, Machine-Pan Head, Cross-Recessed, Brass, UNC-2A — dimensions, part numbers and notes. Public domain, distribution unlimited. Notices: 5 Oct 1992 Amendment 1: Table I, P head radius: "MIN" replaced by "Reference". Requirement 1, material: brass shall be in accordance with ASTM B16, ASTM B36/B36M, ASTM B121/B121M or ASTM B124. Requirement 3, threads: FED-STD-H28/2; acceptability of screw threads in accordance with FED-STD-H28/20, System 21.; 1 29 Feb 2000 MS35214D is canceled and superseded by NASM35214. The Part Identification Number for MS35214D and the part number for NASM35214 are identical.
Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.
