Action Screws
Head Dimensions for 82° Flat Head Machine Screws
Head Dimensions for 100° Flat Head Machine Screws
Head Dimensions for Undercut Flat Head Machine Screws
Head Dimensions for Square Socket Flat Head
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Head Dimensions for Posidriv® Flat Head Machine Screws
Slotted screws for hinges and other case hardware. Flat head, brass. Price per 100 or per Doz. Our price: $1.60. Brass Oval Head Screws. SKU: RH-4B34/12. Slotted screws for hinges. In fact, slotted screws are supposed to strip, by design, to prevent you from overtightening them. Esports games marketing data analytics. Slotted screws are best for projects that require a few screws that you can screw manually, rather than with a powered drill, which will often cause the screw to strip or cam out.
High quality with cut threads (not stamped) for extended durability & precision.
Brass Flat Head Screws Slotted screws for hinges and other case hardware.
Flat head, brass. Price per 100 or per Doz.
Brass Oval Head Screws Slotted screws for hinges and other case hardware. Oval head, brass.
Price per Doz. or per 100.
Cup-Headed Lyre ScrewMAKES LYRE BRACES ADJUSTABLE
This cup-headed pedal lyre screw makes stationary lyre braces adjustable, thereby increasing rigidity.
Same as installed on many high-end European pianos. Chrome finish. Measures 19 x 45 mm.
Price each.
Nickel Flat Head Screws Slotted screws for hinges and other case hardware. Flat head, nickel.
Price per Doz. or per 100.
Nickel Oval Head Screws Slotted screws for hinges and other case hardware. Oval head, nickel. Occasional head pain.
Price per doz. or per 100.
Plate Perimeter Lag ScrewsSTEINWAY-STYLE HIGH POLISH CHROME FINISH
Highest quality. High polish chrome finish. Non-threaded portion provides extra tensile strength to prevent shearing.
Beveled under the built-in washer to help eliminate any plate chipping.
Price EACH.
Plate Pinblock ScrewsPLATE PINBLOCK SCREW
Steel slotted wood screw with non-threaded portion for extra strength.
High polish chrome finish.
Steel Screws Slotted round head for action stack. #10 x 1”
Slotted flat head for soundboard buttons. #10 x 1”
Price per doz. or per 100.
msflathead
82° Flat Head | 82° Undercut Flat Head | 100° Flat Head | Torx® Drive Flat Head | Square Drive Flat Head | Pozidriv° (Type 1A) Flat Head |
Head Dimensions for 82° Flat Head Machine Screws
ANSI B18.6.3 – 1998
Nominal Size | A | H | J | T | M | R | N | F | G | Phillips Driver Size | |||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head Dimensions * | Slot Dimensions | Recess Dimensions | Protusion Above Gaging Diameter | Gaging Diameter | |||||||||||
Diameter | Height | Width | Depth | Dia | Depth | Width | |||||||||
Max | Min | Max | Min | Max | Min | Max | Min | Ref | Ref | Ref | Max | Min | |||
0 | .112 | .096 | .035 | .026 | .023 | .016 | .015 | .010 | .062 | .035 | .014 | .026 | .016 | .078 | 0 |
1 | .137 | .120 | .043 | .033 | .026 | .019 | .019 | .012 | .070 | .043 | .015 | .028 | .016 | .101 | 0 |
2 | .162 | .144 | .051 | .040 | .031 | .023 | .023 | .015 | .096 | .055 | .017 | .029 | .017 | .124 | 1 |
3 | .187 | .167 | .059 | .047 | .035 | .027 | .027 | .017 | .100 | .060 | .018 | .031 | .018 | .148 | 1 |
4 | .212 | .191 | .067 | .055 | .039 | .031 | .030 | .020 | .122 | .081 | .018 | .032 | .019 | .172 | 1 |
5 | .237 | .215 | .075 | .062 | .043 | .035 | .034 | .022 | .148 | .074 | .027 | .034 | .020 | .196 | 2 |
6 | .262 | .238 | .083 | .069 | .048 | .039 | .038 | .024 | .168 | .094 | .029 | .036 | .021 | .220 | 2 |
8 | .312 | .285 | .100 | .084 | .054 | .045 | .045 | .029 | .182 | .110 | .030 | .039 | .023 | .267 | 2 |
10 | .362 | .333 | .116 | .098 | .060 | .050 | .053 | .034 | .198 | .124 | .032 | .042 | .025 | .313 | 2 |
12 | .412 | .380 | .132 | .112 | .067 | .056 | .060 | .039 | .262 | .144 | .035 | .045 | .027 | .362 | 3 |
1/4 | .477 | .442 | .153 | .131 | .075 | .064 | .070 | .046 | .276 | .160 | .036 | .050 | .029 | .424 | 3 |
5/16 | .597 | .556 | .191 | .165 | .084 | .072 | .088 | .058 | .358 | .205 | .061 | .057 | .0345 | .539 | 4 |
3/8 | .717 | .670 | .230 | .200 | .094 | .081 | .106 | .070 | .386 | .234 | .065 | .065 | .039 | .653 | 4 |
1/2 | .815 | .765 | .223 | .186 | .106 | .091 | .103 | .065 | .418 | .265 | .069 | .081 | .049 | .739 | 4 |
* Edge of head may be rounded or flat. |
Head Dimensions for 100° Flat Head Machine Screws
ANSI B18.6.3
Nominal Size | A | H | J | T | M | R | N | F | G | Phillips Driver Size | |||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head Dimensions * | Slot Dimensions | Recess Dimensions | Protusion Above Gaging Diameter | Gaging Diameter | |||||||||||
Diameter | Height | Width | Depth | Dia | Depth | Width | |||||||||
Max | Min | Max | Min | Max | Min | Max | Min | Ref | Ref | Ref | Max | Min | |||
0 | .112 | .095 | .026 | .019 | .023 | .016 | .013 | .008 | .054 | .027 | .013 | .020 | .012 | .074 | 0 |
2 | .162 | .142 | .037 | .029 | .031 | .023 | .019 | .012 | .088 | .048 | .012 | .022 | .014 | .121 | 1 |
4 | .212 | .188 | .049 | .039 | .039 | .031 | .024 | .017 | .110 | .070 | .018 | .025 | .016 | .167 | 1 |
6 | .262 | .235 | .060 | .049 | .048 | .039 | .030 | .022 | .148 | .074 | .027 | .028 | .017 | .214 | 2 |
8 | .312 | .282 | .072 | .060 | .054 | .045 | .036 | .027 | .162 | .090 | .028 | .031 | .019 | .261 | 2 |
10 | .362 | .329 | .083 | .070 | .060 | .050 | .042 | .031 | .178 | .104 | .030 | .034 | .021 | .307 | 2 |
1/4 | .477 | .437 | .110 | .094 | .075 | .064 | .055 | .042 | .240 | .124 | .033 | .040 | .025 | .415 | 3 |
* Edge of head may be rounded or flat. |
Mont Blanc T Slot Screws
Head Dimensions for Undercut Flat Head Machine Screws
ANSI B18.6.3
Nom Size | L | A | H | J | T | M | R | N | F | G | Phillips Driver Size | |||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
These Lengths or Shorter are Undercut | Head Dimensions * | Slot Dimensions | Recess Dimensions | Protusion Above Gaging Diameter | Gaging Diameter | |||||||||||
Diameter | Height | Width | Depth | Dia | Depth | Width | ||||||||||
Max | Min | Max | Min | Max | Min | Max | Min | Ref | Ref | Ref | Max | Min | ||||
0 | 1/8 | .112 | .096 | .025 | .018 | .023 | .016 | .011 | .007 | .062 | .035 | .014 | – | – | – | 0 |
1 | 1/8 | .137 | .120 | .031 | .023 | .026 | .019 | .014 | .009 | .070 | .043 | .015 | – | – | – | 0 |
2 | 1/8 | .162 | .144 | .036 | .028 | .031 | .023 | .016 | .011 | .088 | .048 | .017 | .029 | .017 | .124 | 1 |
4 | 3/16 | .212 | .191 | .047 | .038 | .039 | .031 | .022 | .014 | .110 | .070 | .018 | .032 | .019 | .172 | 1 |
5 | 3/16 | .237 | .215 | .053 | .043 | .043 | .035 | .024 | .016 | .122 | .081 | .018 | .034 | .020 | .196 | 1 |
6 | 3/16 | .262 | .238 | .059 | .048 | .048 | .039 | .027 | .017 | .140 | .066 | .025 | .036 | .021 | .220 | 2 |
8 | 1/4 | .312 | .285 | .070 | .058 | .054 | .045 | .032 | .021 | .168 | .094 | .029 | .039 | .023 | .267 | 2 |
10 | 5/16 | .362 | .333 | .081 | .068 | .060 | .050 | .037 | .024 | .182 | .110 | .030 | .042 | .025 | .313 | 2 |
12 | 3/8 | .412 | .380 | .092 | .078 | .067 | .056 | .043 | .028 | .226 | .110 | .030 | .045 | .027 | .362 | 3 |
1/4 | 7/16 | .477 | .442 | .107 | .092 | .075 | .064 | .050 | .032 | .244 | .124 | .032 | .050 | .029 | .424 | 3 |
5/16 | 1/2 | .597 | .556 | .134 | .116 | .084 | .072 | .062 | .041 | .310 | .157 | .053 | .057 | .034 | .539 | 4 |
3/8 | 9/16 | .717 | .670 | .161 | .140 | .094 | .081 | .075 | .049 | .358 | .205 | .061 | .065 | .039 | .653 | 4 |
1/2 | 3/4 | .815 | .765 | .156 | .130 | .106 | .091 | .072 | .046 | .402 | .252 | .068 | .081 | .049 | .739 | 4 |
Head Dimensions for Torx® Drive Flat Head Machine Screws – Camcar
T Slot Screws
Nominal Size | G | T | B | F | Max Penetration of “No-Go” Gauge (Fallaway) | Torx® Driver Size | ||
---|---|---|---|---|---|---|---|---|
Head Diameter | Head Height | Recess Diameter | Gauge Penetration | |||||
Max Sharp | Min Sharp | Abs Min | Ref | Ref | Min | |||
4 | .225 | .209 | .195 | .067 | .094 | .028 | .019 | T8 |
6 | .279 | .257 | .244 | .083 | .111 | .035 | .022 | T10 |
8 | .332 | .308 | .292 | .100 | .132 | .040 | .026 | T15 |
10 | .385 | .359 | .340 | .116 | .155 | .050 | .031 | T20 |
1/4 | .507 | .477 | .452 | .153 | .200 | .075 | .040 | T27 |
Torx° is a trademark of the Camcar Corporation, division of Textron Industries. |
Y Slot Screw Head
Head Dimensions for Square Socket Flat Head
Machine Screws – IFI
Y Slot Screws
Nominal Size or Basic Screw Diameter | A | H | M | T | Driver Size | |||||
---|---|---|---|---|---|---|---|---|---|---|
Head Diameter | Recess Square | Recess Depth | Recess Penetration Gaging Depth | |||||||
Max | Min | Max | Min | Max | Min | Max | Min | |||
4 | .1120 | .212 | .191 | .071 | .0696 | .073 | .063 | .038 | .032 | 0 |
6 | .1380 | .262 | .238 | .091 | .090 | .113 | .105 | .065 | .057 | 1 |
8 | .1640 | .312 | .285 | .1126 | .111 | .140 | .119 | .075 | .065 | 2 |
10 | .1900 | .362 | .333 | .1126 | .111 | .140 | .119 | .075 | .065 | 2 |
12 | .2130 | .412 | .380 | .133 | .1315 | .165 | .155 | .095 | .085 | 3 |
1/4 | .2500 | .477 | .442 | .133 | .1315 | .165 | .155 | .095 | .085 | 3 |
5/16 | .3125 | .597 | .556 | .191 | .1895 | .201 | .191 | .100 | .090 | 4 |
This type of recess has a square opening, slightly tapered sides and a conical bottom. |
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Head Dimensions for Posidriv® Flat Head Machine Screws
ASME B18.6.3 – 1998
T Slot Screws For Sale
Nominal Size | A | H | M | R | N | Recess Penetration Gaging Depth | F | G | Driver Size | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head Dimensions | Recess Dimensions | Protrusion Above Gaging Diameter | Gaging Diameter | ||||||||||
Diameter | Height | Dia | Depth | Width | |||||||||
Max | Min | Max | Min | Ref | Ref | Ref | Max | Min | Max | Min | |||
2 | .162 | .144 | .051 | .040 | .096 | .055 | .029 | .053 | .037 | .029 | .017 | .124 | 1 |
4 | .212 | .191 | .067 | .055 | .122 | .081 | .030 | .079 | .063 | .032 | .019 | .172 | 1 |
6 | .262 | .238 | .083 | .069 | .168 | .098 | .041 | .091 | .073 | .036 | .021 | .220 | 2 |
8 | .312 | .285 | .100 | .084 | .182 | .112 | .041 | .107 | .089 | .039 | .023 | .267 | 2 |
10 | .362 | .333 | .116 | .098 | .198 | .127 | .041 | .122 | .104 | .042 | .025 | .313 | 2 |
12 | .412 | .380 | .132 | .112 | .262 | .149 | .056 | .136 | .118 | .045 | .027 | .362 | 3 |
1/4 | .477 | .442 | .153 | .131 | .276 | .164 | .057 | .151 | .133 | .050 | .029 | .424 | 3 |
5/16 | .597 | .556 | .191 | .165 | .358 | .211 | .086 | .193 | .175 | .057 | .034 | .539 | 4 |
3/8 | .717 | .670 | .230 | .200 | .368 | .239 | .086 | .222 | .204 | .065 | .039 | .653 | 4 |
Posidriv® is a registered trademark of the Phillips Screw Company. Our fasteners with the “1A-drive” are not manufactured by or connected with the producers of Pozidrive® fasteners. |
See also:
Slotted Flat Head Cap Screws
Machine Screw Drive Types
Machine Screw Head Styles
Slotted Flat Head Cap Screws
Machine Screw Drive Types
Machine Screw Head Styles