MS35207 at a glance

Specification

Item	Value
Head	pan
Drive	cross-recess (MS9006)
Thread series	fine (UNF-2A)
Material	Carbon steel per Fed. Std. No. 66.
Heat treatment	Tensile load based on 60,000 psi minimum ultimate tensile strength; load pounds calculated from the stress areas of Screw-Thread Standards for Federal Services (Handbook H28).

Item	Value
Finish	Cadmium plate QQ-P-416 Type II Class 3, or (Amendment 2) zinc coating ASTM B633-78 Fe/Zn 5 (5 micron) Type II.
Procurement	FF-S-92
Thread specification	Handbook H28
Status	Rev. F (22 Oct 1970) with Amendment 2 (29 Sep 1999, adds zinc coating option). Notice 1 (14 Dec 1999): canceled and superseded by NASM35207; the part numbers are identical (MS35207-201 = NASM35207-201). Approved 25 Jun 1953.

Dimension, in	.086-64 UNF-2A	.112-48 UNF-2A	.138-40 UNF-2A	.164-36 UNF-2A	.190-32 UNF-2A	.250-28 UNF-2A	.3125-24 UNF-2A	.375-24 UNF-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
min tensile lbf	235	395	605	880	1200	2180	3480	5260

Minimum – maximum as tabulated in MS35207 Rev. F; letters as on the standard's drawing.

Every part number of MS35207 Rev. F, by thread size, each with its own link.

.086-64 UNF-2A10 part numbers · tolerance +0/-.031

.112-48 UNF-2A13 part numbers

.138-40 UNF-2A15 part numbers

.164-36 UNF-2A19 part numbers

.190-32 UNF-2A18 part numbers

.250-28 UNF-2A16 part numbers

.3125-24 UNF-2A15 part numbers

.375-24 UNF-2A13 part numbers

Thread class 2A, Handbook H28. 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. Dimensions in inches (title shows IN/MM; Table I is in inches). Dimensions in Table I are printed without the leading zero in the scan (read as .0860, .167, etc.).
The Amendment 2 text prints the example MS35207-201Z as ".086-56, UNC-2A"; Table I of the sheet gives .086-64 UNF-2A for dash 201 (the sheet governs).
Revision date: the margin revision block gives F = 22 Oct 1970 (Notice 1 also says 22 Oct 1970); Amendment 2 prints 21 May 1969, which is the date of revision E.
Table III (sheet 3) cross-references the cancelled AN520 (in part) and AN526 (in part) dash numbers; not transcribed.

MS35207 Rev. F, 22 Oct 1970 — Screw, Machine-Pan Head, Cross-Recessed, Carbon Steel, Cadmium Plated, UNF-2A (IN/MM) — dimensions, part numbers and notes. Public domain, distribution unlimited. Notices: 29 Sep 1999 Amendment 2: adds zinc coating per ASTM B633-78 Fe/Zn 5 (5 micron) Type II as an option to cadmium plating; part number suffix Z.; 1 14 Dec 1999 Canceled and superseded by NASM35207. The Part Identification Number for MS35207F and the part number for NASM35207 are identical.

Part	Meaning
Format	MS35207-<dash number>[Z]
Example	MS35207-201 = pan head cross-recessed carbon steel, cadmium plated, .086-64 UNF-2A, .125 long; MS35207-201Z = same, zinc coated
Length tolerance, .125 to 1.000	+0/-.031
Length tolerance, 1.250 to 2.000	+0/-.062
Length tolerance, 2.250 to 3.000	+0/-.094
Dash	Dash number from Table I selects thread size and length (201 to 319)
(none)	Coating: cadmium plated
Z	Coating: zinc coated (Amendment 2)