قائمة أنواع المفكات
مفكات القلاووظ، هي أداوات تستخدم لثبيت أوحل المسامير القلاووظ.
الأنواع الشائعة
أنواع خارجية
Square
Hex
Pentagon
A pentagon screw drive uses five-sided fastener heads. The fastener is known as a penta screw. They require a special five-point socket in order to be turned. Water meter covers, natural gas valves, and electrical cabinets are commonly secured with penta fasteners. It is also common in the U.S. for fire hydrants to have valves with a pentagon drive.
Thumbscrew
A thumbscrew is a type of screw drive with either a tall head and ridged or knurled sides, or a flat, vertical head. They are intended to be tightened and loosened by hand. They are often cut for Phillips head or slotted screwdrivers as well.
Slotted types
Slot head
| Blade width | Fastener size |
|---|---|
| 3⁄32 بوصة (2.4 mم) | 0–1 |
| 1⁄8 بوصة (3.2 mم) | 2 |
| 5⁄32 بوصة (4.0 mم) | 3 |
| 3⁄16 بوصة (4.8 mم) | 4–5 |
| 1⁄4 بوصة (6.4 mم) | 6–7 |
| 5⁄16 بوصة (7.9 mم) | 8–10 |
| 3⁄8 بوصة (9.5 mم) | 12–14 |
| 7⁄16 بوصة (11 mم) | 16–18 |
| 1⁄2 بوصة (13 mم) | 18–24 |
Cross
Cruciform types
فيليپس
| Tool size | Fastener size |
|---|---|
| 0 | 0–1 |
| 1 | 2–4 |
| 2 | 5–9 |
| 3 | 10–16 |
| 4 | 18–24 |
Frearson
French recess
This section requires expansion. (June 2010)
|
JIS B 1012
Mortorq
Pozidriv
Supadriv
Robertson
| Colour | Screw types | Fraction | Range |
|---|---|---|---|
| Orange (#00) | No. 1 & 2 | 1/16 in.+ | 1.77–1.80 mم (0.070–0.071 بوصة) |
| Yellow (#0) | No. ثلاثة & 4 | 3/32 in.- | 2.29–2.31 mم (0.090–0.091 بوصة) |
| Green (#1) | No. 5,ستة & 7 | 7/64 in.+ | 2.82–2.86 mم (0.111–0.113 بوصة) |
| Red (#2) | No. 8,تسعة & 10 | 1/8 in.+ | 3.34–3.38 mم (0.131–0.133 بوصة) |
| Black (#3) | No. 12 and larger | 3/16 in.+ | 4.81–4.85 mم (0.189–0.191 بوصة) |
Close-up of Robertson drivers
Illustration from Robertson's patent application
Advertisement: “A Study in Evolution”
Hex socket
Hexalobular socket
TTAP
Combination drives
Phillips/square
Breakaway head
Bristol
Clutch
Double hex
Line
One-way
Pentalobular
Polydrive
Proprietary head
Spanner
Spline
Torq-set
TP3
Tri-wing
Triple square
6 mm andثمانية mm triple square drivers.
End view ofعشرة mm triple square screw.
Protruding obstacle
تصنيفات بديلة
- External
- Hex
- Line (ALH)
- Square
-
Socket heads
- Bristol
- Clutch
- Double hex
- Hex socket
- Hexalobular socket
- Line (ALR)
- Polydrive
- Robertson
- Spline
- TP3
- Triple square
هوامش
المصادر
- ^ screw drive systems
- ^ خطأ استشهاد: وسم
<ref>غير سليم؛ لا نص تم توفيره للمراجع المسماةcapotosto - ^ "McFeely's Square Drive Screws".
- ^ "American Fastener".
قائمة المراجع
- نطقب:Rybczynski2000
وصلات خارجية
 |
مشاع الفهم فيه ميديا متعلقة بموضوع Robertson screw. |
- Phillips or Pozidriv?
- Bristol spline driver manufacturer's catalog
- Spanner Jaw Sizes
