AN510 at a glance
Specification
| Item | Value |
|---|---|
| Head | flat, 82 degree |
| Drive | cross-recess or slotted |
| Thread series | fine (UNF-2A) |
| Material | Carbon steel grade 1010 (UNS G10100), ASTM A108, 55,000 psi min UTS; CRES SAE-AMS-QQ-S-763 class 430 or XM-7, ASTM A582 type 303 / 303Se, or SAE-AMS-S-7720 composition 302; brass ASTM B16/B36/B121/B134/B159/B206, 55,000 psi min; aluminum alloy 2024, ASTM B211 or SAE-AMS-QQ-A-225/6. |
| Item | Value |
|---|---|
| Heat treatment | Aluminum alloy: 62,000 psi minimum ultimate tensile strength, SAE-AMS2772. |
| Finish | Carbon steel: cadmium plate SAE-AMS-QQ-P-416 Type II Class 3. Brass: black chemical finish MIL-F-495 or cadmium plate (per code). CRES: passivate SAE AMS2700. Aluminum: anodize MIL-A-8625 Type I or II Class 1. |
| Procurement | FF-S-92 |
| Status | Rev. 8 (16 Mar 2020): inactive for new design after 2 Jun 2011. Slotted head screws inactive for new design after 17 Feb 1959; superseded in part by NASM35191, NASM35199, NASM35203 and MS51960. Not for airframe construction (note 6). |
Dimensions by size
| Dimension, in | 0-80 UNF-2A | 1-72 UNF-2A | 2-64 UNF-2A | 3-56 UNF-2A | 4-48 UNF-2A | 5-44 UNF-2A | 6-40 UNF-2A | 8-36 UNF-2A | 10-32 UNF-2A | 1/4-28 UNF-2A |
|---|---|---|---|---|---|---|---|---|---|---|
| A — major diameter, max | .060 | .073 | .086 | .099 | .112 | .125 | .138 | .164 | .190 | .250 |
| J — slot width | .024 – .016 | .026 – .019 | .031 – .023 | .035 – .027 | .039 – .031 | .043 – .035 | .048 – .039 | .054 – .045 | .060 – .050 | .075 – .064 |
| D dia | max sharp .119, min sharp .105, abs min with max F .101 | max sharp .146, min sharp .130, abs min with max F .126 | max sharp .172, min sharp .156, abs min with max F .150 | max sharp .199, min sharp .181, abs min with max F .175 | max sharp .225, min sharp .207, abs min with max F .200 | max sharp .252, min sharp .232, abs min with max F .225 | max sharp .279, min sharp .257, abs min with max F .249 | max sharp .332, min sharp .308, abs min with max F .300 | max sharp .385, min sharp .359, abs min with max F .348 | max sharp .507, min sharp .477, abs min with max F .462 |
| F max | .011 | .013 | .014 | .015 | .016 | .018 | .019 | .022 | .025 | .031 |
| H ref | .035 – .026 | .043 – .033 | .051 – .040 | .059 – .048 | .067 – .055 | .075 – .062 | .083 – .069 | .100 – .084 | .116 – .098 | .153 – .131 |
| R rad max | .025 | .030 | .030 | .035 | .040 | .045 | .050 | .055 | .060 | .070 |
| H1 | .025 – .018 | .030 – .023 | .036 – .026 | .041 – .034 | .047 – .039 | .053 – .043 | .058 – .048 | .070 – .059 | .081 – .069 | .107 – .092 |
| K | .015 – .010 | .019 – .012 | .023 – .015 | .027 – .017 | .030 – .020 | .034 – .022 | .038 – .024 | .045 – .029 | .053 – .034 | .070 – .046 |
| undercut slotted | H ['.025', '.018'], K ['.011', '.007'] | H ['.030', '.023'], K ['.014', '.009'] | H ['.036', '.028'], K ['.022', '.015'] | H ['.041', '.034'], K ['.025', '.017'] | H ['.047', '.039'], K ['.028', '.020'] | H ['.053', '.043'], K ['.024', '.016'] | H ['.058', '.048'], K ['.027', '.017'] | H ['.070', '.059'], K ['.032', '.021'] | H ['.081', '.069'], K ['.047', '.034'] | H ['.107', '.092'], K ['.061', '.046'] |
Minimum – maximum as tabulated in AN510 Rev. 8; letters as on the standard's drawing.
Part numbers and lengths
Every part number of AN510 Rev. 8, by thread size, each with its own link.
0-80 UNF-2A7 part numbers · tolerance +0/-.031
| Part no. | Length, in |
|---|---|
| AN510-0-2 | .125 |
| AN510-0-3 | .188 |
| AN510-0-4 | .250 |
| AN510-0-5 | .312 |
| AN510-0-6 | .375 |
| AN510-0-7 | .438 |
| AN510-0-8 | .500 |
1-72 UNF-2A7 part numbers · tolerance +0/-.031
| Part no. | Length, in |
|---|---|
| AN510-1-2 | .125 |
| AN510-1-3 | .188 |
| AN510-1-4 | .250 |
| AN510-1-5 | .312 |
| AN510-1-6 | .375 |
| AN510-1-7 | .438 |
| AN510-1-8 | .500 |
2-64 UNF-2A10 part numbers · tolerance +0/-.031
| Part no. | Length, in |
|---|---|
| AN510-2-3 | .188 |
| AN510-2-4 | .250 |
| AN510-2-5 | .312 |
| AN510-2-6 | .375 |
| AN510-2-7 | .438 |
| AN510-2-8 | .500 |
| AN510-2-9 | .563 |
| AN510-2-10 | .625 |
| AN510-2-11 | .688 |
| AN510-2-12 | .750 |
3-56 UNF-2A10 part numbers · tolerance +0/-.031
| Part no. | Length, in |
|---|---|
| AN510-3-3 | .188 |
| AN510-3-4 | .250 |
| AN510-3-5 | .312 |
| AN510-3-6 | .375 |
| AN510-3-7 | .438 |
| AN510-3-8 | .500 |
| AN510-3-9 | .563 |
| AN510-3-10 | .625 |
| AN510-3-11 | .688 |
| AN510-3-12 | .750 |
4-48 UNF-2A20 part numbers
| Part no. | Length, in | Tol. |
|---|---|---|
| AN510-4-3 | .188 | +0/-.031 |
| AN510-4-4 | .250 | +0/-.031 |
| AN510-4-5 | .312 | +0/-.031 |
| AN510-4-6 | .375 | +0/-.031 |
| AN510-4-7 | .438 | +0/-.031 |
| AN510-4-8 | .500 | +0/-.031 |
| AN510-4-9 | .563 | +0/-.031 |
| AN510-4-10 | .625 | +0/-.031 |
| AN510-4-11 | .688 | +0/-.031 |
| AN510-4-12 | .750 | +0/-.031 |
| AN510-4-13 | .813 | +0/-.031 |
| AN510-4-14 | .875 | +0/-.031 |
| AN510-4-15 | .938 | +0/-.031 |
| AN510-4-16 | 1.000 | +0/-.031 |
| AN510-4-18 | 1.125 | +0/-.062 |
| AN510-4-20 | 1.250 | +0/-.062 |
| AN510-4-22 | 1.375 | +0/-.062 |
| AN510-4-24 | 1.500 | +0/-.062 |
| AN510-4-26 | 1.625 | +0/-.062 |
| AN510-4-28 | 1.750 | +0/-.062 |
5-44 UNF-2A19 part numbers
| Part no. | Length, in | Tol. |
|---|---|---|
| AN510-5-4 | .250 | +0/-.031 |
| AN510-5-5 | .312 | +0/-.031 |
| AN510-5-6 | .375 | +0/-.031 |
| AN510-5-7 | .438 | +0/-.031 |
| AN510-5-8 | .500 | +0/-.031 |
| AN510-5-9 | .563 | +0/-.031 |
| AN510-5-10 | .625 | +0/-.031 |
| AN510-5-11 | .688 | +0/-.031 |
| AN510-5-12 | .750 | +0/-.031 |
| AN510-5-13 | .813 | +0/-.031 |
| AN510-5-14 | .875 | +0/-.031 |
| AN510-5-15 | .938 | +0/-.031 |
| AN510-5-16 | 1.000 | +0/-.031 |
| AN510-5-18 | 1.125 | +0/-.062 |
| AN510-5-20 | 1.250 | +0/-.062 |
| AN510-5-22 | 1.375 | +0/-.062 |
| AN510-5-24 | 1.500 | +0/-.062 |
| AN510-5-26 | 1.625 | +0/-.062 |
| AN510-5-28 | 1.750 | +0/-.062 |
6-40 UNF-2A25 part numbers
| Part no. | Length, in | Tol. |
|---|---|---|
| AN510-6-4 | .250 | +0/-.031 |
| AN510-6-5 | .312 | +0/-.031 |
| AN510-6-6 | .375 | +0/-.031 |
| AN510-6-7 | .438 | +0/-.031 |
| AN510-6-8 | .500 | +0/-.031 |
| AN510-6-9 | .563 | +0/-.031 |
| AN510-6-10 | .625 | +0/-.031 |
| AN510-6-11 | .688 | +0/-.031 |
| AN510-6-12 | .750 | +0/-.031 |
| AN510-6-13 | .813 | +0/-.031 |
| AN510-6-14 | .875 | +0/-.031 |
| AN510-6-15 | .938 | +0/-.031 |
| AN510-6-16 | 1.000 | +0/-.031 |
| AN510-6-18 | 1.125 | +0/-.062 |
| AN510-6-20 | 1.250 | +0/-.062 |
| AN510-6-22 | 1.375 | +0/-.062 |
| AN510-6-24 | 1.500 | +0/-.062 |
| AN510-6-26 | 1.625 | +0/-.062 |
| AN510-6-28 | 1.750 | +0/-.062 |
| AN510-6-30 | 1.875 | +0/-.062 |
| AN510-6-32 | 2.000 | +0/-.062 |
| AN510-6-34 | 2.125 | +0/-.094 |
| AN510-6-36 | 2.250 | +0/-.094 |
| AN510-6-38 | 2.375 | +0/-.094 |
| AN510-6-40 | 2.500 | +0/-.094 |
8-36 UNF-2A29 part numbers
| Part no. | Length, in | Tol. |
|---|---|---|
| AN510-8-4 | .250 | +0/-.031 |
| AN510-8-5 | .312 | +0/-.031 |
| AN510-8-6 | .375 | +0/-.031 |
| AN510-8-7 | .438 | +0/-.031 |
| AN510-8-8 | .500 | +0/-.031 |
| AN510-8-9 | .563 | +0/-.031 |
| AN510-8-10 | .625 | +0/-.031 |
| AN510-8-11 | .688 | +0/-.031 |
| AN510-8-12 | .750 | +0/-.031 |
| AN510-8-13 | .813 | +0/-.031 |
| AN510-8-14 | .875 | +0/-.031 |
| AN510-8-15 | .938 | +0/-.031 |
| AN510-8-16 | 1.000 | +0/-.031 |
| AN510-8-18 | 1.125 | +0/-.062 |
| AN510-8-20 | 1.250 | +0/-.062 |
| AN510-8-22 | 1.375 | +0/-.062 |
| AN510-8-24 | 1.500 | +0/-.062 |
| AN510-8-26 | 1.625 | +0/-.062 |
| AN510-8-28 | 1.750 | +0/-.062 |
| AN510-8-30 | 1.875 | +0/-.062 |
| AN510-8-32 | 2.000 | +0/-.062 |
| AN510-8-34 | 2.125 | +0/-.094 |
| AN510-8-36 | 2.250 | +0/-.094 |
| AN510-8-38 | 2.375 | +0/-.094 |
| AN510-8-40 | 2.500 | +0/-.094 |
| AN510-8-42 | 2.625 | +0/-.094 |
| AN510-8-44 | 2.750 | +0/-.094 |
| AN510-8-46 | 2.875 | +0/-.094 |
| AN510-8-48 | 3.000 | +0/-.094 |
10-32 UNF-2A29 part numbers
| Part no. | Length, in | Tol. |
|---|---|---|
| AN510-10-4 | .250 | +0/-.031 |
| AN510-10-5 | .312 | +0/-.031 |
| AN510-10-6 | .375 | +0/-.031 |
| AN510-10-7 | .438 | +0/-.031 |
| AN510-10-8 | .500 | +0/-.031 |
| AN510-10-9 | .563 | +0/-.031 |
| AN510-10-10 | .625 | +0/-.031 |
| AN510-10-11 | .688 | +0/-.031 |
| AN510-10-12 | .750 | +0/-.031 |
| AN510-10-13 | .813 | +0/-.031 |
| AN510-10-14 | .875 | +0/-.031 |
| AN510-10-15 | .938 | +0/-.031 |
| AN510-10-16 | 1.000 | +0/-.031 |
| AN510-10-18 | 1.125 | +0/-.062 |
| AN510-10-20 | 1.250 | +0/-.062 |
| AN510-10-22 | 1.375 | +0/-.062 |
| AN510-10-24 | 1.500 | +0/-.062 |
| AN510-10-26 | 1.625 | +0/-.062 |
| AN510-10-28 | 1.750 | +0/-.062 |
| AN510-10-30 | 1.875 | +0/-.062 |
| AN510-10-32 | 2.000 | +0/-.062 |
| AN510-10-34 | 2.125 | +0/-.094 |
| AN510-10-36 | 2.250 | +0/-.094 |
| AN510-10-38 | 2.375 | +0/-.094 |
| AN510-10-40 | 2.500 | +0/-.094 |
| AN510-10-42 | 2.625 | +0/-.094 |
| AN510-10-44 | 2.750 | +0/-.094 |
| AN510-10-46 | 2.875 | +0/-.094 |
| AN510-10-48 | 3.000 | +0/-.094 |
1/4-28 UNF-2A27 part numbers
| Part no. | Length, in | Tol. |
|---|---|---|
| AN510-416-6 | .375 | +0/-.031 |
| AN510-416-7 | .438 | +0/-.031 |
| AN510-416-8 | .500 | +0/-.031 |
| AN510-416-9 | .563 | +0/-.031 |
| AN510-416-10 | .625 | +0/-.031 |
| AN510-416-11 | .688 | +0/-.031 |
| AN510-416-12 | .750 | +0/-.031 |
| AN510-416-13 | .813 | +0/-.031 |
| AN510-416-14 | .875 | +0/-.031 |
| AN510-416-15 | .938 | +0/-.031 |
| AN510-416-16 | 1.000 | +0/-.031 |
| AN510-416-18 | 1.125 | +0/-.062 |
| AN510-416-20 | 1.250 | +0/-.062 |
| AN510-416-22 | 1.375 | +0/-.062 |
| AN510-416-24 | 1.500 | +0/-.062 |
| AN510-416-26 | 1.625 | +0/-.062 |
| AN510-416-28 | 1.750 | +0/-.062 |
| AN510-416-30 | 1.875 | +0/-.062 |
| AN510-416-32 | 2.000 | +0/-.062 |
| AN510-416-34 | 2.125 | +0/-.094 |
| AN510-416-36 | 2.250 | +0/-.094 |
| AN510-416-38 | 2.375 | +0/-.094 |
| AN510-416-40 | 2.500 | +0/-.094 |
| AN510-416-42 | 2.625 | +0/-.094 |
| AN510-416-44 | 2.750 | +0/-.094 |
| AN510-416-46 | 2.875 | +0/-.094 |
| AN510-416-48 | 3.000 | +0/-.094 |
Part number
What each code means
| Part | Meaning |
|---|---|
| Format | AN510[material]<size>[R or -]<length> |
| -0 | Size No. 0-80 |
| -1 | Size No. 1-72 |
| -2 | Size No. 2-64 |
| -3 | Size No. 3-56 |
| -4 | Size No. 4-48 |
| -5 | Size No. 5-44 |
| -6 | Size No. 6-40 |
| -8 | Size No. 8-36 |
| -10 | Size No. 10-32 |
| -416 | Size 1/4-28 |
| Length | Length in sixteenths of an inch (-8 = 8/16 = .500 in) |
| Example | AN510-4-8 = slotted, carbon steel, cadmium plated, 4-48 UNF-2A, .500 inch long; AN510C4R8 = cross-recessed, CRES, passivated |
| Length tolerance, .125 to 1.000 | +0/-.031 |
| Length tolerance, 1.125 to 2.000 | +0/-.062 |
| Length tolerance, 2.125 to 3.000 | +0/-.094 |
| (none) | Material: carbon steel, cadmium plated |
| B | Material: brass, black chemical finish |
| PB | Material: brass, cadmium plated |
| UB | Material: brass, no plating or finish |
| C | Material: corrosion resistant steel, passivated |
| DD | Material: aluminum alloy, anodized |
| - | Drive: slotted head (no code between first and second dash number) |
| R | Drive: cross-recessed head |
| Undercut | Dash numbers marked (d) have undercut heads. |
Notes from the standard
- Thread: class 2A, FED-STD-H28/2. Complete threads extend to within 2 threads of the head for screws up to and including 2.000 in; longer screws have 1.750 in minimum complete thread.
- Sizes No. 10 (.1900) and larger carry a manufacturer symbol on the top of the head, indented. CRES sizes No. 5 (.1250) and larger carry one dash, indented.
- Cross-recess in accordance with NASM9006.
- As printed in the standard: the Table I H1 minimum for No. 2-64 is .026 (Table II prints .028); the length row 1.625 to 2.000 prints 1.375 for 1.750; the No. 6-40 row prints 3-36 for 6-36.
Sources
- AN510 Rev. 8, 16 Mar 2020 — Screw, Machine, Flat Head, 82 Degree, Fine Thread — dimensions, part numbers and notes. Public domain, distribution unlimited.
Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.