Enyanjula y'ebintu
ASTM A325 Hex Head Screws zino zizitowa hex structural bolts ezikoleddwa okusobola okuwa amaanyi agakwatagana agakwatagana n’obusobozi bw’okutikka emigugu egy’amaanyi ku biyungo by’ebyuma. Zikozesebwa ne hex nuts enzito ezikwatagana ne structural washers, okukakasa nti zikola okwesigika mu tension-critical oba shear-critical assemblies.
Ebikwata ku by’ekikugu
| Parameter | Okunnyonnyola |
| Obuwanvu bwa Diameter | 1/2" – 1-1/2" (M12 – M36 metric ezenkanankana) |
| Ekika ky'Owuzi | UNC oba omuddirirwa ogw’emiguwa 8 |
| Omusono gw'omutwe | Omutwe gwa hex omuzito |
| Ekikozesebwa | Ekyuma kya kaboni ekya wakati-(Ekika 1), Ekyuma ekikyusa embeera y’obudde (Ekika 3) |
| Ebintu Ebikozesebwa mu by’Emakanika | 1/2"–1": Ekitono ennyo. amaanyi g’okusika 120 ksi (827 MPa); 1-1/8"–1-1/2": ksi 105 (724 MPa) nga bwe kiri nti. |
| Okumaliriza ku ngulu | Hot-dip galvanized, zinc plated, oba black oxide (enkola eza bulijjo ez’amakolero) |
| Okussaawo | Kozesa ne nuts ne washers, ebikozesebwa mu torque ebikaliddwa (calibrated torque tools) bye birungi |
Omutindo gwa Dimensional & Threading
| Obuwanvu bwa Bolt | Ekyenkanankana mu Metric | Ekika ky'Owuzi | Obugazi bw'omutwe Okubuna Flats | Obugulumivu bw’omutwe | Okukozesa okwa bulijjo |
| 1/2" | M12 | UNC | 0.88" (mmita 22.4) | 0.31" (mmita 7.9) | Ebiyungo by’enzimba y’ekitangaala |
| 5/8" | M16 | UNC | 1.06" (mmita 27) | 0.38" (mmita 9.7) | Enkuŋŋaana z’enzimba eza wakati |
| 3/4" | M20 | UNC | 1.25" (mmita 31.8) | 0.44" (mmita 11.2) | Ebiyungo ebizito eby’enzimba |
| 7/8" | M22 | 8UN | 1.38" (mmita 35.1) | 0.50" (mmita 12.7) | Ebizimbe eby’ekyuma ebizito ennyo |
| 1" | M24 | 8UN | 1.50" (mmita 38.1) | 0.56" (mmita 14.2) | Ebiyungo ebinene eby’enzimba |
| 1-1/8" | M27 | 8UN | 1.63" (mmita 41.4) | 0.62" (mmita 15.7) | Enkuŋŋaana ezizitowa eza yinginiya |
| 1-1/4" | M30 | 8UN | 1.75" (mmita 44.5) | 0.69" (mmita 17.5) | Enkola z'enzimba y'omugugu omungi- |
| 1-1/2" | M36 | 8UN | 2.00" (mmita 50.8) | 0.81" (mmita 20.6) | Ebizimbe by’amakolero ebinene |
Okusaba
Ebibanda by’ekyuma ebitikkira emigugu-n’ebizimbe by’enguudo ennene
Ebizimbe by'obusuubuzi ne ofiisi ebigulumivu-
Enkola z’amakolero g’amakolero
Ebifo ebikola amasannyalaze
Ebifo ebizimba amafuta ne ggaasi
Enkuŋŋaana z’okukola ebyuma ebizito
Emitendera & Okugoberera
Omutindo:ASTM A325 / ASTM F3125 Ekibiina kya A
325
Ekika 1:Ekyuma kya kaboni ekya wakati, ekizikiddwa era nga kifukiddwa
Ekika 3:Ekyuma ekikyusa embeera y’obudde okusobola okukulukuta-embeera ezirabika
Enkola ya thread:UNC (Unified Coarse Thread), 8UN ku sayizi ezisukka oba ezenkanawa yinsi emu
Ekika ky’omutwe:Omutwe gwa hex omuzito (structural torque capacity design) .
Okugerageranya ne Bulooti Endala ez’Ebizimbe
| Ekintu eky'enjawulo | ASTM A325 | Standard Hex Bolt | ASTM A307 |
| Omutendera gw’Amaanyi | Waggulu | Midiyamu | Wansi |
| Enkozesa y’Ebizimbe | Yee | Limited | Limited |
| Okugezesa kwa ASTM | Etaagisa | Tekyetaagisa | Tekyetaagisa |
| Obusobozi bw’okutikka | Waggulu | Midiyamu | Wansi |
| Okukkirizibwa kwa Yinginiya | Yee | Ekitundu | Nedda |
Enkola y’okussaako
Kozesa entangawuuzi ezikwatagana n’eby’okunaaba ebizimbe
Siiga enkola ya calibrated torque oba tension control
Kakasa nti okwatagana bulungi nga tonnaba kunyweza
Kakasa nti ebitundu ebiyunga bituudde mu bujjuvu
Kozesa ebipimo ebiziyiza-okusumulula mu mbeera z’okukankana
Ebibuuzo ebibuuzibwa
Q: ASTM A325 hex head screw ekozesebwa ki?
A: Kikozesebwa nga ekisumuluzo ky’enzimba y’ebyuma-ku-ebyuma ebiyungibwa ku mugugu-mu bibanda, ebizimbe, n’ebizimbe by’ekyuma eby’amakolero.
Q: Njawulo ki eri wakati wa bulooti za ASTM A325 ne ASTM A490?
A: ASTM A325 ekozesebwa ku kuyungibwa kw’ekyuma ekizimbibwa okwa bulijjo, ate ASTM A490 egaba amaanyi ag’okusika aga waggulu ku nkola ezisinga obukulu ez’okusiba enzimba ez’amaanyi ennyo.
Q: ASTM A325 structural bolts zisobola okukozesebwa ebweru?
A: Yee. Ku mbeera ez’ebweru oba ezirabika, obuuma obubuguma-dip galvanized oba Type 3 weathering steel ASTM A325 obuuma butera okukozesebwa okuziyiza okukulukuta.
Q: Obuuma bwa ASTM A325 bukyusibwakyusibwa ne bulooti za hex eza bulijjo?
A: Nedda.Bulots za ASTM A325 zikakasibwa okusiba enzimba era zirina okukozesebwa nga dizayini ya yinginiya eraga ebyetaago by’ekizimbe-grade.
Q: Nati ki ne washers ki ezirina okukozesebwa ne ASTM A325 bolts?
A: Zirina okukozesebwa ne hex nuts enzito ne structural hardened washers okukakasa nti preload bulungi n’okutambuza omugugu mu biyungo by’ebyuma.
Q: Makolero ki agatera okukozesa obuuma obuyitibwa ASTM A325 structural bolts?
A: Zikozesebwa nnyo mu kuzimba ebyuma, yinginiya w’ebibanda, amabibiro g’amasannyalaze, ebizimbe by’amafuta ne ggaasi, n’okukola amakolero amazito.
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