DIN 7991 مصنع مسامير رأس المقبس الغاطسة
XZ Fastener manufactures DIN 7991 countersunk socket head screws for buyers who need a flush surface, internal hex drive, and controlled metric threading for machinery, equipment panels, fixtures, furniture hardware, and OEM assemblies. These flat head socket screws can be supplied in alloy steel, carbon steel, stainless steel 304, and stainless steel 316, with finish and packing arranged according to order requirement. For projects that include multiple screw, bolt, nut, and washer types, buyers can review related منتجات السحابة and send a combined size list for practical factory quotation.
Factory supply can be arranged by standard, size, material, grade, surface finish, packing method, and inspection requirement.
المواصفات السريعة
ما يجب أن يعرفه المشترون قبل شراء براغي رأس المقبس الغاطسة DIN 7991
Flush Fit Requires More Detail
DIN 7991 countersunk socket head screws are selected when the screw head must sit flush with the assembly surface. Before production, buyers should confirm countersink angle, head diameter, head height, socket size, thread pitch, length measurement method, and mating hole preparation.
Because countersunk head geometry affects seating and appearance, buyers should avoid replacing them with pan head, button head, or standard socket cap screws without checking the assembly drawing.
Match Drive, Torque, and Material
Internal hex drive screws offer clean appearance and compact tool access, but the tightening method should match screw grade, socket size, and base material. The guide on أنواع محرك المسمار can help purchasing and engineering teams compare socket, Phillips, Torx, slotted, and other drive options.
For OEM equipment, send the drawing or sample if the countersink must align with a specific machined surface.
أوصاف الشراء الشائعة
DIN 7991 countersunk socket head screws are often listed under several purchasing names. To reduce confusion, include the standard number, material, grade, finish, and length in the RFQ.
- DIN 7991 براغي ذات رأس مقبس غاطس، فولاذ سبائكي 10.9 أو 12.9، إنهاء أكسيد أسود، متري قلاوظ خشن.
- DIN 7991 flat head socket screws, stainless steel 304 or 316, plain or passivated finish, full thread according to size.
- Hex socket countersunk head screws, M3 to M16, zinc plated or nickel plated, bulk carton packing.
- DIN 7991 countersunk screws ordered with DIN 933 full thread hex bolts for machinery assembly kits.
- الصف 8.8 فولاذ كربوني مسامير سداسية، والمتري مسامير سداسية الرأس، والغاطس براغي بسداسي داخلي لتصنيع المعدات.
- Zinc plated DIN 933 bolts, black oxide DIN 933 bolts, and hot dip galvanized DIN 933 bolts supplied with matching nuts and washers for combined project purchasing.
جدول المواصفات التفصيلية
| البند المواصفات | الخيارات المتاحة | ملاحظات المشتري |
|---|---|---|
| نوع المنتج | DIN 7991 براغي ذات رأس مأخذ غاطس، رأس مسطح براغي بسداسي داخلي، مسامير غاطسة ذات مقبس سداسي | Confirm DIN 7991 or ISO 10642 reference when the drawing requires a specific head profile. |
| نطاق الحجم | Common metric sizes include M3, M4, M5, M6, M8, M10, M12, M16; other sizes can be discussed | Send diameter x length and clarify how length is measured for countersunk screws. |
| الموضوع | متري قلاوظ خشن. متري قلاوظ ناعم متاح عند الطلب | Thread pitch and tolerance should match the tapped hole or nut requirement. |
| نمط الرأس | رأس مسطح غاطس مع مقبس سداسي داخلي | Check countersink angle, head diameter, and seating depth for flush assemblies. |
| مادة | فولاذ سبائكي, فولاذ كربوني, فولاذ مقاوم للصدأ 304, فولاذ مقاوم للصدأ 316 | Material should be chosen according to strength, corrosion environment, appearance, and cost target. |
| فئة القوة | 8.8, 10.9, 12.9, A2-70, A4-70, A4-80 | High-strength grades should be matched with the assembly design and tightening method. |
| الانتهاء من السطح | أكسيد أسود، مطلي بالزنك، الزنك الأصفر، مطلي بالنيكل، الفوسفات، Dacromet، Geomet، الفولاذ العادي، التخميل | Coating thickness can affect thread fit and countersunk seating; samples can be reviewed when required. |
| التعبئة والتغليف | كرتون بالجملة، صندوق صغير، كيس بلاستيكي، ملصق العميل، ملصق الباركود، تعبئة البليت | Carton weight, box quantity, label content, and pallet layout should be confirmed before quotation. |
| التفتيش | فحص الأبعاد، فحص مقياس الخيط، فحص حجم المقبس، فحص مقعد الرأس، فحص السطح، اختبار الصلابة | يمكن توفير تقرير التفتيش وفقا لمتطلبات الطلب. |
شرح المواد والصف
فولاذ سبائكي DIN 7991 مسامير are commonly selected for grade 10.9 or 12.9 assemblies where strength and compact appearance are important. They are suitable for machinery, molds, fixtures, automation equipment, and structural subassemblies where the head must not project above the surface.
خيارات فولاذ كربوني can be supplied for cost-sensitive assemblies where moderate strength and coating protection are sufficient. Buyers should confirm whether zinc plating, black oxide, phosphate, or another coating is required.
فولاذ مقاوم للصدأ 304 و316 are used when corrosion resistance, clean appearance, or outdoor exposure is important. Stainless 316 is preferred for stronger corrosion resistance in humid, marine-related, or chemical environments.
For buyers comparing screw families, the دليل الصناعة لاختيار المسمار can help identify when countersunk socket screws are better than pan head, button head, self-tapping, or machine screw alternatives.
دليل اختيار تشطيب السطح
أكسيد أسود
Common for alloy steel countersunk socket screws used in indoor machinery, molds, and tooling. Oil treatment may be requested for storage protection.
مطلي بالزنك
Suitable for general industrial use where a bright appearance and moderate corrosion protection are required.
مطلي بالنيكل
Often selected where appearance, surface cleanliness, or special assembly preference matters.
الفوسفات
Used for darker appearance, oil retention, or controlled friction requirements in mechanical assemblies.
Dacromet وGeomet
Available upon request for higher corrosion protection needs. Buyers should define coating performance and thread fit expectations before order confirmation.
إنهاء المقارنة
ال دليل طلاء السحابة can help buyers compare zinc, black oxide, Dacromet, Geomet, PTFE, and other surface treatments.
التصنيع ومراقبة الجودة
يتم عادةً إنتاج مسامير رأس المقبس الغاطسة DIN 7991 من خلال إعداد الأسلاك، والتوجيه أو التشكيل على البارد، وتشكيل المقبس، ولف الخيوط، والمعالجة الحرارية عند الحاجة، وتشطيب السطح، والفرز، والتعبئة. يجب التحكم في تشكيل الرأس الغاطس لأن زاوية الرأس وقطر الرأس يؤثران على الجلوس المتسطح.
قد يشمل الفحص قطر الرأس، وارتفاع الرأس، وشكل التجويف الجانبي، وحجم المقبس، والطول الإجمالي، وطول الخيط، ودرجة الخيط، وملاءمة الخيط، وحالة السطح، وصلابة الأجزاء الفولاذية المعالجة بالحرارة. ال دليل طرق فحص الخيط يشرح الفحوصات العملية التي يمكن للمشترين طلب أدوات تثبيت ملولبة.
For factory orders, XZ Fastener can provide packing photos, label confirmation, and inspection records according to order requirement.
التطبيقات
التجمعات الصناعية
- Machine guards, panels, covers, plates, brackets, and equipment housings.
- تركيبات التشغيل الآلي، ولوحات الأدوات، ومكونات القالب، والتجمعات ذات الصلة باستخدام الحاسب الآلي.
- موصلات الأثاث، وأجهزة العرض، والإطارات المعدنية، وهياكل الأسطح المتدفقة.
- Electrical enclosures, access covers, guide rails, and compact machinery parts.
Procurement Programs
- OEM production batches with repeated screw sizes and controlled packaging.
- Distributor stock orders covering common M3 to M16 countersunk socket screws.
- شحنات مختلطة مع براغي بسداسي داخلي ومسامير الآلة ومسامير سداسية والصواميل والغسالات.
- Private label boxes, barcode labels, and pallet packing available upon request.
كيفية الحصول على عرض أسعار أسرع
Send diameter, length, thread pitch, material, strength grade, finish, quantity, packaging method, inspection requirements, and destination details. If the screw must sit perfectly flush, include the assembly drawing, countersink angle, countersink diameter, and any special head tolerance requirement.
For measuring and confirming screw dimensions, the fastener length guide helps buyers clarify how length is measured for screws, bolts, studs, and rods. For complete RFQ preparation, buyers can also use the accurate quote information guide.
الأسئلة الشائعة
Can XZ Fastener produce DIN 7991 countersunk socket head screws as a factory order?
Yes. DIN 7991 countersunk socket head screws can be supplied for factory orders, OEM projects, distributor stock, and equipment manufacturing. Buyers should provide size, material, grade, finish, quantity, packaging, and inspection requirements.
What is the main difference between DIN 7991 and DIN 912 screws?
DIN 7991 screws have a countersunk flat head designed to sit flush with the surface, while DIN 912 screws have a cylindrical socket head. The correct choice depends on head clearance, assembly appearance, and load design.
ما هي المواد المتوفرة لـ DIN 7991 غاطسة براغي بسداسي داخلي؟
Common materials include alloy steel, carbon steel, stainless steel 304, and stainless steel 316. Brass and other materials may be discussed when the drawing and application requirements are provided.
Can you supply black oxide or zinc plated DIN 7991 screws?
Yes. Black oxide, zinc plated, yellow zinc, nickel plated, phosphate, Dacromet, Geomet, plain stainless, and passivated stainless finishes can be discussed according to material and order requirement.
What should buyers check before ordering countersunk screws?
Buyers should confirm countersink angle, head diameter, head height, socket size, thread pitch, length measurement method, material, grade, finish, and whether the mating hole is prepared correctly for flush seating.
Can DIN 7991 screws be packed with buyer labels?
Yes. Bulk cartons, small boxes, plastic bags, barcode labels, buyer labels, and pallet marks can be arranged according to order requirement. Label content should be confirmed before packing.
Send Your DIN 7991 Countersunk Socket Screw Inquiry
Send your size list, finish, quantity, packaging method, carton or pallet requirement, and inspection requirements. XZ Fastener can review DIN 7991 countersunk socket head screws, matching washers, nuts, and related fasteners for factory quotation.
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